build(deps-dev): update flake8-rst-docstrings requirement

Updates the requirements on [flake8-rst-docstrings](https://github.com/peterjc/flake8-rst-docstrings) to permit the latest version.
- [Commits](peterjc/flake8-rst-docstrings@v0.0.11...v0.4.0)

---
updated-dependencies:
- dependency-name: flake8-rst-docstrings
  dependency-version: 0.4.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -38,7 +38,7 @@ lint = [
     'flake8-docstrings',
     'flake8-quotes',
     'flake8-logging-format',
-    'flake8-rst-docstrings >= 0.0.11',
+    'flake8-rst-docstrings >= 0.4.0',
     'isort',
     'mypy',
     # Support for pyproject.toml added in 6.1.0