Bump astroid from 2.5.6 to 2.6.0

[dependabot]

Bumps astroid from 2.5.6 to 2.6.0.

Changelog

Sourced from astroid's changelog.

What's New in astroid 2.6.0?

Release Date: 2021-06-22

• Appveyor and travis are no longer used in the continuous integration

• setuptools_scm has been removed and replaced by tbump in order to not have hidden runtime dependencies to setuptools

• NodeNg, the base node class, is now accessible from astroid or astroid.nodes as it can be used for typing.

• Update enum brain to improve inference of .name and .value dynamic class attributes

  Closes PyCQA/pylint#1932 Closes PyCQA/pylint#2062 Closes PyCQA/pylint#2306

• Removed Repr, Exec, and Print nodes as the ast nodes they represented have been removed with the change to Python 3

• Deprecate Ellipsis node. It will be removed with the next minor release. Checkers that already support Python 3.8+ work without issues. It's only necessary to remove all references to the astroid.Ellipsis node. This changes will make development of checkers easier as the resulting tree for Ellipsis will no longer depend on the python version. Background: With Python 3.8 the ast.Ellipsis node, along with ast.Str, ast.Bytes, ast.Num, and ast.NamedConstant were merged into ast.Constant.

• Deprecated Index and ExtSlice nodes. They will be removed with the next minor release. Both are now part of the Subscript node. Checkers that already support Python 3.9+ work without issues. It's only necessary to remove all references to the astroid.Index and astroid.ExtSlice nodes. This change will make development of checkers easier as the resulting tree for ast.Subscript nodes will no longer depend on the python version. Background: With Python 3.9 ast.Index and ast.ExtSlice were merged into the ast.Subscript node.

• Updated all Match nodes to be internally consistent.

• Add Pattern base class.

What's New in astroid 2.5.8?

Release Date: 2021-06-07

• Improve support for Pattern Matching

... (truncated)

Commits

• 82bf77d Bump astroid to 2.6.0, update changelog
• 2265f41 Update requirements_test.txt
• 1ac13e0 Add additional typing dependencies in requirements
• a1ac842 Rename non obvious PY3X constant to PY3X_PLUS
• 6a18c10 Add additional_dependencies for existing package stubs
• 76b96a1 Add a disable method might be static in a Visitor
• 233bd6d Merge pull request #1062 from cdce8p/misc-typing-improvements
• c13ee1d Add mypy configuration but excluding all files in pre-commit
• b7ae97c Add mypy configuration for stub that do not exists
• 02f026d Add sys.version_info guard to rebuilder
• Additional commits viewable in compare view

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Superseded by #58.