Bump the docs group with 1 update

Bumps the docs group with 1 update: [mkdocs-material](https://github.com/squidfunk/mkdocs-material).

- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.2.6...9.4.2)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: docs
...

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