Fix the pydantic and httpx lib warnings #100
Description
tests/leettools/svc/test_docsink_router.py::test_regular_docsink_router
/Users/feng/opt/anaconda3/envs/leettools/lib/python3.11/site-packages/pydantic/fields.py:1011: PydanticDeprecatedSince20: min_items is deprecated and will be removed, use min_length instead. Deprecated in Pydantic V2.0 to be removed in V3.0. See Pydantic V2 Migration Guide at https://errors.pydantic.dev/2.10/migration/
warn('min_items is deprecated and will be removed, use min_length instead', DeprecationWarning)
tests/leettools/svc/test_docsink_router.py::test_regular_docsink_router
/Users/feng/opt/anaconda3/envs/leettools/lib/python3.11/site-packages/httpx/_client.py:690: DeprecationWarning: The 'app' shortcut is now deprecated. Use the explicit style 'transport=WSGITransport(app=...)' instead.
warnings.warn(message, DeprecationWarning)