chore(deps): bump mkdocs-material from 8.2.7 to 9.1.21 (#2524)

* chore(deps): bump mkdocs-material from 8.2.7 to 9.5.18

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 8.2.7 to 9.5.18.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Upgrade guide](https://github.com/squidfunk/mkdocs-material/blob/master/docs/upgrade.md)
- [Commits](squidfunk/mkdocs-material@8.2.7...9.5.18)

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

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

* chore: bump in requirements.txt

* fix: update mkdocs-material nav overrides

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Manuel de la Peña <mdelapenya@gmail.com>

Pipfile

@@ -9,7 +9,7 @@ verify_ssl = true
 mkdocs = "==1.5.3"
 mkdocs-codeinclude-plugin = "==0.2.1"
 mkdocs-include-markdown-plugin = "==6.0.4"
-mkdocs-material = "==9.5.13"
+mkdocs-material = "==9.5.18"
 mkdocs-markdownextradata-plugin = "==0.2.5"
 
 [requires]