Bump the optional group with 4 updates

Bumps the optional group with 4 updates: [markdown](https://github.com/Python-Markdown/markdown), [pydoclint](https://github.com/jsh9/pydoclint), [mkdocs-material](https://github.com/squidfunk/mkdocs-material) and [pytest-asyncio](https://github.com/pytest-dev/pytest-asyncio).


Updates `markdown` from 3.5.1 to 3.5.2
- [Release notes](https://github.com/Python-Markdown/markdown/releases)
- [Changelog](https://github.com/Python-Markdown/markdown/blob/master/docs/changelog.md)
- [Commits](Python-Markdown/markdown@3.5.1...3.5.2)

Updates `pydoclint` from 0.3.8 to 0.3.9
- [Release notes](https://github.com/jsh9/pydoclint/releases)
- [Changelog](https://github.com/jsh9/pydoclint/blob/main/CHANGELOG.md)
- [Commits](jsh9/pydoclint@0.3.8...0.3.9)

Updates `mkdocs-material` from 9.5.3 to 9.5.6
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.5.3...9.5.6)

Updates `pytest-asyncio` from 0.23.3 to 0.23.4
- [Release notes](https://github.com/pytest-dev/pytest-asyncio/releases)
- [Commits](pytest-dev/pytest-asyncio@v0.23.3...v0.23.4)

---
updated-dependencies:
- dependency-name: markdown
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: optional
- dependency-name: pydoclint
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: optional
- dependency-name: mkdocs-material
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: optional
- dependency-name: pytest-asyncio
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: optional
...

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

Author: dependabot[bot]

pyproject.toml

@@ -51,18 +51,18 @@ dev-flake8 = [
   "flake8 == 6.1.0",
   "flake8-docstrings == 1.7.0",
   "flake8-pyproject == 1.2.3",  # For reading the flake8 config from pyproject.toml
-  "pydoclint == 0.3.8",
+  "pydoclint == 0.3.9",
   "pydocstyle == 6.3.0",
 ]
 dev-formatting = ["black == 24.1.1", "isort == 5.13.2"]
 dev-mkdocs = [
   "black == 24.1.1",
-  "Markdown==3.5.1",
+  "Markdown==3.5.2",
   "mike == 2.0.0",
   "mkdocs-gen-files == 0.5.0",
   "mkdocs-literate-nav == 0.6.1",
   "mkdocs-macros-plugin == 1.0.5",
-  "mkdocs-material == 9.5.3",
+  "mkdocs-material == 9.5.6",
   "mkdocstrings[python] == 0.24.0",
   "frequenz-repo-config[lib] == 0.8.0",
 ]
@@ -82,7 +82,7 @@ dev-pytest = [
   "pytest == 7.4.4",
   "frequenz-repo-config[extra-lint-examples] == 0.8.0",
   "pytest-mock == 3.12.0",
-  "pytest-asyncio == 0.23.3",
+  "pytest-asyncio == 0.23.4",
   "async-solipsism == 0.5",
 ]
 dev = [