Update pydocstyle from 4.0.1 to 5.0.1

Author: pyup-bot

dev-requirements.txt

@@ -16,7 +16,7 @@ freezegun==0.3.12
 isort==4.3.21  # Lint imports
 mypy==0.750  # Type checking
 pip_check_reqs==2.0.3
-pydocstyle==4.0.1  # Lint docstrings
+pydocstyle==5.0.1  # Lint docstrings
 pyenchant==2.0.0  # Bindings for a spellchecking sytem
 pygithub==1.44.1
 pylint==2.4.4  # Lint