Pin pydantic-settings upper bound due to parser bug

[gpauloski]

Description

Pydantic-settings 2.13.0 causes the following error in parsing:

=================================== FAILURES ===================================
___________________________ test_parse_cli_args_only ___________________________

    def test_parse_cli_args_only() -> None:
        argv = [
            '--app',
            'mock-app',
            '--engine.executor',
            'thread-pool',
        ]
>       config = parse_args_to_config(argv)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/run/parse_test.py:49: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
taps/run/parse.py:192: in parse_args_to_config
    cli_settings: CliSettingsSource[Config] = CliSettingsSource(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:415: in __init__
    self._connect_root_parser(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:906: in _connect_root_parser
    self._add_parser_args(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:1049: in _add_parser_args
    self._add_parser_submodels(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:1237: in _add_parser_submodels
    self._add_argument(model_group, *(f'{flag_prefix}{name}' for name in arg_names), **kwargs)
taps/run/parse.py:51: in _add_argument
    parser.add_argument(*names, **kwargs)
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1473: in add_argument
    return self._add_action(action)
           ^^^^^^^^^^^^^^^^^^^^^^^^
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1675: in _add_action
    action = super(_ArgumentGroup, self)._add_action(action)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1487: in _add_action
    self._check_conflict(action)
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1624: in _check_conflict
    conflict_handler(action, confl_optionals)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <argparse._ArgumentGroup object at 0x7f9930c27bd0>
action = _StoreAction(option_strings=['--app'], dest='app', nargs='?', const='{}', default='==SUPPRESS==', type=None, choices=None, required=False, help='==SUPPRESS==', metavar='JSON')
conflicting_actions = [('--app', _StoreAction(option_strings=['--app'], dest='app.name', nargs=None, const=None, default='==SUPPRESS==', typ...ge', 'physics', 'synthetic', 'mock-app'], required=False, help='App choice {%(choices)s}. (required)', metavar='APP'))]

    def _handle_conflict_error(self, action, conflicting_actions):
        message = ngettext('conflicting option string: %s',
                           'conflicting option strings: %s',
                           len(conflicting_actions))
        conflict_string = ', '.join([option_string
                                     for option_string, action
                                     in conflicting_actions])
>       raise ArgumentError(action, message % conflict_string)
E       argparse.ArgumentError: argument --app: conflicting option string: --app

/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1633: ArgumentError
_________________________ test_parse_config_file_only __________________________

tmp_path = PosixPath('/tmp/pytest-of-runner/pytest-0/test_parse_config_file_only0')

    def test_parse_config_file_only(tmp_path: pathlib.Path) -> None:
        config_text = """\
    [app]
    name = "mock-app"
    tasks = 0
    """
    
        config_file = tmp_path / 'config.toml'
        with open(config_file, 'w') as f:
            f.write(config_text)
    
>       config = parse_args_to_config(['--config', str(config_file)])
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/run/parse_test.py:87: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
taps/run/parse.py:192: in parse_args_to_config
    cli_settings: CliSettingsSource[Config] = CliSettingsSource(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:415: in __init__
    self._connect_root_parser(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:906: in _connect_root_parser
    self._add_parser_args(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:1049: in _add_parser_args
    self._add_parser_submodels(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:1237: in _add_parser_submodels
    self._add_argument(model_group, *(f'{flag_prefix}{name}' for name in arg_names), **kwargs)
taps/run/parse.py:51: in _add_argument
    parser.add_argument(*names, **kwargs)
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1473: in add_argument
    return self._add_action(action)
           ^^^^^^^^^^^^^^^^^^^^^^^^
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1675: in _add_action
    action = super(_ArgumentGroup, self)._add_action(action)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1487: in _add_action
    self._check_conflict(action)
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1624: in _check_conflict
    conflict_handler(action, confl_optionals)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <argparse._ArgumentGroup object at 0x7f9930dd1250>
action = _StoreAction(option_strings=['--app'], dest='app', nargs='?', const='{}', default='==SUPPRESS==', type=None, choices=None, required=False, help='==SUPPRESS==', metavar='JSON')
conflicting_actions = [('--app', _StoreAction(option_strings=['--app'], dest='app.name', nargs=None, const=None, default='==SUPPRESS==', typ...ge', 'physics', 'synthetic', 'mock-app'], required=False, help='App choice {%(choices)s}. (required)', metavar='APP'))]

    def _handle_conflict_error(self, action, conflicting_actions):
        message = ngettext('conflicting option string: %s',
                           'conflicting option strings: %s',
                           len(conflicting_actions))
        conflict_string = ', '.join([option_string
                                     for option_string, action
                                     in conflicting_actions])
>       raise ArgumentError(action, message % conflict_string)
E       argparse.ArgumentError: argument --app: conflicting option string: --app

/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1633: ArgumentError
_______________________ test_parse_multiple_config_file ________________________

tmp_path = PosixPath('/tmp/pytest-of-runner/pytest-0/test_parse_multiple_config_fil0')

    def test_parse_multiple_config_file(tmp_path: pathlib.Path) -> None:
        config_text_1 = """\
    [app]
    name = "mock-app"
    tasks = 0
    """
        config_text_2 = """\
    [app]
    tasks = 1
    """
    
        config_file_1 = tmp_path / 'config-1.toml'
        with open(config_file_1, 'w') as f:
            f.write(config_text_1)
    
        config_file_2 = tmp_path / 'config-2.toml'
        with open(config_file_2, 'w') as f:
            f.write(config_text_2)
    
>       config = parse_args_to_config(
            ['--config', str(config_file_1), str(config_file_2)],
        )

tests/run/parse_test.py:112: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
taps/run/parse.py:192: in parse_args_to_config
    cli_settings: CliSettingsSource[Config] = CliSettingsSource(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:415: in __init__
    self._connect_root_parser(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:906: in _connect_root_parser
    self._add_parser_args(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:1049: in _add_parser_args
    self._add_parser_submodels(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:1237: in _add_parser_submodels
    self._add_argument(model_group, *(f'{flag_prefix}{name}' for name in arg_names), **kwargs)
taps/run/parse.py:51: in _add_argument
    parser.add_argument(*names, **kwargs)
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1473: in add_argument
    return self._add_action(action)
           ^^^^^^^^^^^^^^^^^^^^^^^^
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1675: in _add_action
    action = super(_ArgumentGroup, self)._add_action(action)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1487: in _add_action
    self._check_conflict(action)
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1624: in _check_conflict
    conflict_handler(action, confl_optionals)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <argparse._ArgumentGroup object at 0x7f9939893750>
action = _StoreAction(option_strings=['--app'], dest='app', nargs='?', const='{}', default='==SUPPRESS==', type=None, choices=None, required=False, help='==SUPPRESS==', metavar='JSON')
conflicting_actions = [('--app', _StoreAction(option_strings=['--app'], dest='app.name', nargs=None, const=None, default='==SUPPRESS==', typ...ge', 'physics', 'synthetic', 'mock-app'], required=False, help='App choice {%(choices)s}. (required)', metavar='APP'))]

    def _handle_conflict_error(self, action, conflicting_actions):
        message = ngettext('conflicting option string: %s',
                           'conflicting option strings: %s',
                           len(conflicting_actions))
        conflict_string = ', '.join([option_string
                                     for option_string, action
                                     in conflicting_actions])
>       raise ArgumentError(action, message % conflict_string)
E       argparse.ArgumentError: argument --app: conflicting option string: --app

/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1633: ArgumentError
_____________________ test_parse_cli_args_and_config_file ______________________

tmp_path = PosixPath('/tmp/pytest-of-runner/pytest-0/test_parse_cli_args_and_config0')

    def test_parse_cli_args_and_config_file(tmp_path: pathlib.Path) -> None:
        config_text = """\
    [app]
    name = "mock-app"
    tasks = 0
    """
    
        config_file = tmp_path / 'config.toml'
        with open(config_file, 'w') as f:
            f.write(config_text)
    
        args = ['--config', str(config_file), '--app.tasks', '1']
>       config = parse_args_to_config(args)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^

tests/run/parse_test.py:133: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
taps/run/parse.py:192: in parse_args_to_config
    cli_settings: CliSettingsSource[Config] = CliSettingsSource(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:415: in __init__
    self._connect_root_parser(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:906: in _connect_root_parser
    self._add_parser_args(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:1049: in _add_parser_args
    self._add_parser_submodels(
.tox/py311/lib/python3.11/site-packages/pydantic_settings/sources/providers/cli.py:1237: in _add_parser_submodels
    self._add_argument(model_group, *(f'{flag_prefix}{name}' for name in arg_names), **kwargs)
taps/run/parse.py:51: in _add_argument
    parser.add_argument(*names, **kwargs)
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1473: in add_argument
    return self._add_action(action)
           ^^^^^^^^^^^^^^^^^^^^^^^^
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1675: in _add_action
    action = super(_ArgumentGroup, self)._add_action(action)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1487: in _add_action
    self._check_conflict(action)
/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1624: in _check_conflict
    conflict_handler(action, confl_optionals)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 

self = <argparse._ArgumentGroup object at 0x7f99397f8ad0>
action = _StoreAction(option_strings=['--app'], dest='app', nargs='?', const='{}', default='==SUPPRESS==', type=None, choices=None, required=False, help='==SUPPRESS==', metavar='JSON')
conflicting_actions = [('--app', _StoreAction(option_strings=['--app'], dest='app.name', nargs=None, const=None, default='==SUPPRESS==', typ...ge', 'physics', 'synthetic', 'mock-app'], required=False, help='App choice {%(choices)s}. (required)', metavar='APP'))]

    def _handle_conflict_error(self, action, conflicting_actions):
        message = ngettext('conflicting option string: %s',
                           'conflicting option strings: %s',
                           len(conflicting_actions))
        conflict_string = ', '.join([option_string
                                     for option_string, action
                                     in conflicting_actions])
>       raise ArgumentError(action, message % conflict_string)
E       argparse.ArgumentError: argument --app: conflicting option string: --app

/opt/hostedtoolcache/Python/3.11.14/x64/lib/python3.11/argparse.py:1633: ArgumentError

Fixes

N/A

Type of Change

• Bug (non-breaking change which fixes an issue)
• Enhancement (non-breaking change which adds or improves functionality)
• Internal (refactoring, performance, and testing)
• Breaking (fix or feature that would cause existing functionality to not work as expected)
• Documentation (no changes to the code)
• Development (CI workflows, packages, templates, etc.)
• Package (package dependencies and versions)

Testing

Tests pass on older version.

Pull Request Checklist

Please confirm the PR meets the following requirements.

• Relevant tags are added (breaking, bug, documentation, enhancement, package, etc.).
• Code changes pass pre-commit (e.g., ruff, mypy, etc.).
• Tests have been added to show the fix is effective or that the new feature works.
• New and existing unit tests pass locally with the changes.
• Docs have been updated and reviewed if relevant.