build(deps-dev): Bump the patch group across 1 directory with 2 updates

Bumps the patch group with 2 updates in the / directory: [mkdocstrings-python](https://github.com/mkdocstrings/python) and [pylint](https://github.com/pylint-dev/pylint).


Updates `mkdocstrings-python` from 2.0.7 to 2.0.9
- [Release notes](https://github.com/mkdocstrings/python/releases)
- [Changelog](https://github.com/mkdocstrings/python/blob/main/CHANGELOG.md)
- [Commits](mkdocstrings/python@2.0.7...2.0.9)

Updates `pylint` from 4.0.8 to 4.0.9
- [Release notes](https://github.com/pylint-dev/pylint/releases)
- [Commits](pylint-dev/pylint@v4.0.8...v4.0.9)

---
updated-dependencies:
- dependency-name: mkdocstrings-python
  dependency-version: 2.0.9
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: patch
- dependency-name: pylint
  dependency-version: 4.0.9
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -58,7 +58,7 @@ dev-mkdocs = [
   "mkdocs-macros-plugin == 1.5.0",
   "mkdocs-material == 9.7.7",
   "mkdocstrings[python] == 1.0.6",
-  "mkdocstrings-python == 2.0.7",
+  "mkdocstrings-python == 2.0.9",
   "pymdownx-superfence-filter-lines == 0.1.0",
   "griffe==2.3.0",
 ]
@@ -72,7 +72,7 @@ dev-noxfile = ["nox == 2026.8.17", "frequenz-repo-config[lib] == 0.19.0"]
 dev-pylint = [
   # For checking the noxfile, docs/ script, and tests
   "frequenz-channels[dev-mkdocs,dev-noxfile,dev-pytest]",
-  "pylint == 4.0.8",
+  "pylint == 4.0.9",
 ]
 dev-pytest = [
   "async-solipsism == 0.9",