Bump the python-dependencies group with 3 updates

Bumps the python-dependencies group with 3 updates: [django-settings-holder](https://github.com/MrThearMan/django-settings-holder), [pymdown-extensions](https://github.com/facelessuser/pymdown-extensions) and [mkdocs-mermaid2-plugin](https://github.com/fralau/mkdocs-mermaid2-plugin).


Updates `django-settings-holder` from 0.2.1 to 0.2.2
- [Release notes](https://github.com/MrThearMan/django-settings-holder/releases)
- [Commits](MrThearMan/django-settings-holder@v0.2.1...v0.2.2)

Updates `pymdown-extensions` from 10.11.2 to 10.12
- [Release notes](https://github.com/facelessuser/pymdown-extensions/releases)
- [Commits](facelessuser/pymdown-extensions@10.11.2...10.12)

Updates `mkdocs-mermaid2-plugin` from 1.1.1 to 1.2.1
- [Release notes](https://github.com/fralau/mkdocs-mermaid2-plugin/releases)
- [Changelog](https://github.com/fralau/mkdocs-mermaid2-plugin/blob/master/CHANGELOG.md)
- [Commits](fralau/mkdocs-mermaid2-plugin@v1.1.1...v1.2.1)

---
updated-dependencies:
- dependency-name: django-settings-holder
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-dependencies
- dependency-name: pymdown-extensions
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-dependencies
- dependency-name: mkdocs-mermaid2-plugin
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-dependencies
...

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

pyproject.toml

@@ -66,8 +66,8 @@ tox-gh-actions = "3.2.0"
 
 [tool.poetry.group.docs.dependencies]
 mkdocs = "1.6.1"
-pymdown-extensions = "10.11.2"
-mkdocs-mermaid2-plugin = "1.1.1"
+pymdown-extensions = "10.12"
+mkdocs-mermaid2-plugin = "1.2.1"
 
 [tool.poetry.group.lint.dependencies]
 mypy = "1.13.0"