Bump pydocstyle from 5.1.1 to 6.1.1

Bumps [pydocstyle](https://github.com/PyCQA/pydocstyle) from 5.1.1 to 6.1.1.
- [Release notes](https://github.com/PyCQA/pydocstyle/releases)
- [Changelog](https://github.com/PyCQA/pydocstyle/blob/master/docs/release_notes.rst)
- [Commits](PyCQA/pydocstyle@5.1.1...6.1.1)

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

Author: dependabot[bot]

requirements-lint.txt

@@ -6,5 +6,5 @@ flake8-import-order==0.18.1
 flake8-quotes==3.2.0
 isort==5.8.0
 pylint==2.7.0
-pydocstyle==6.0.0
+pydocstyle==6.1.1
 flakehell==0.9.0