build(deps): bump the patches group in /docs with 1 update

Bumps the patches group in /docs 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@9.4.7...9.4.8)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: patches
...

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

docs/requirements.txt

@@ -1,6 +1,6 @@
 mkdocs == 1.5.3
 mkdocs-material-extensions == 1.3
-mkdocs-material == 9.4.7
+mkdocs-material == 9.4.8
 mkdocs-autorefs == 0.5.0
 mkdocstrings == 0.23.0
 mkdocs-literate-nav == 0.6.1