Bump pydocstyle from 6.0.0 to 6.1.1 (#219)

Bumps [pydocstyle](https://github.com/PyCQA/pydocstyle) from 6.0.0 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@6.0.0...6.1.1)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements_lint.txt

@@ -1,5 +1,5 @@
 black==21.5b1
 flake8==3.9.2
 mypy==0.812
-pydocstyle==6.0.0
+pydocstyle==6.1.1
 pylint==2.8.2