Bump mkdocs-material from 9.3.1 to 9.4.2 in /config

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 9.3.1 to 9.4.2.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.3.1...9.4.2)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

config/requirements.txt

@@ -1,6 +1,6 @@
 mkdocs==1.5.2
 mkdocs-exclude==1.0.2
-mkdocs-material==9.3.1
+mkdocs-material==9.4.2
 #mkdocs-drawio-exporter
 mkdocs-git-revision-date-localized-plugin==1.2.0
 mkdocs-git-authors-plugin==0.7.2