Build(deps): bump mkdocs-material from 9.5.27 to 9.5.28

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 9.5.27 to 9.5.28.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.5.27...9.5.28)

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

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

requirements-test.txt

@@ -4,7 +4,7 @@ isort==5.13.2
 bandit==1.7.9
 mike==2.1.2
 markdown-include==0.8.1
-mkdocs-material==9.5.27
+mkdocs-material==9.5.28
 mkdocs-minify-plugin==0.8.0
 mkdocstrings==0.25.1
 ./util/mkdocs-redirects