Update flake8 config

Author: domdfcoding

tox.ini

@@ -221,7 +221,7 @@ setenv =
     UNSAFE_PYO3_SKIP_VERSION_CHECK=1
 
 [testenv:lint]
-basepython = python3.8
+basepython = python3.9
 changedir = {toxinidir}
 ignore_errors = True
 skip_install = False
@@ -235,7 +235,7 @@ deps =
     flake8-github-actions>=0.1.0
     flake8-noqa>=1.1.0,<=1.2.2
     flake8-pyi>=20.10.0,<=22.8.0
-    flake8-pytest-style>=1.3.0
+    flake8-pytest-style>=1.3.0,<2
     flake8-quotes>=3.3.0
     flake8-slots>=0.1.0
     flake8-sphinx-links>=0.0.4
@@ -245,7 +245,7 @@ deps =
     git+https://github.com/domdfcoding/flake8-rst-docstrings.git
     git+https://github.com/python-formate/flake8-unused-arguments.git@magic-methods
     git+https://github.com/python-formate/flake8-missing-annotations.git
-    pydocstyle>=6.0.0
+    git+https://github.com/domdfcoding/pydocstyle.git@stub-functions
     pygments>=2.7.1
     importlib_metadata<4.5.0; python_version<'3.8'
 commands = python3 -m flake8_rst_docstrings_sphinx flake8_github_actions tests --allow-toolbox --extend-exclude bad_code.py {posargs}