Bump pydocstyle from 4.0.0 to 4.0.1

Bumps [pydocstyle](https://github.com/PyCQA/pydocstyle) from 4.0.0 to 4.0.1.
- [Release notes](https://github.com/PyCQA/pydocstyle/releases)
- [Changelog](https://github.com/PyCQA/pydocstyle/blob/master/docs/release_notes.rst)
- [Commits](PyCQA/pydocstyle@4.0.0...4.0.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

requirements-lint.txt

@@ -1,6 +1,6 @@
 # linters
 pycodestyle==2.5.0
-pydocstyle==4.0.0
+pydocstyle==4.0.1
 pylint==2.3.1; python_version>'3.3'
 pygments
 pyroma==2.5