build(deps-dev): update pydocstyle requirement from >=6.1.0 to >=6.3.0

Updates the requirements on [pydocstyle](https://github.com/PyCQA/pydocstyle) to permit the latest version.
- [Release notes](https://github.com/PyCQA/pydocstyle/releases)
- [Changelog](https://github.com/PyCQA/pydocstyle/blob/master/docs/release_notes.rst)
- [Commits](PyCQA/pydocstyle@6.1.0...6.3.0)

---
updated-dependencies:
- dependency-name: pydocstyle
  dependency-version: 6.3.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -43,7 +43,7 @@ lint = [
     'mypy',
     # Support for pyproject.toml added in 6.1.0
     # https://github.com/PyCQA/pydocstyle/pull/534
-    'pydocstyle >= 6.1.0',
+    'pydocstyle >= 6.3.0',
     # Required for `setup.py check --restructuredtext --strict`.  Otherwise:
     # warning: check: Cannot analyze code. Pygments package not found.
     'pygments',