Bump mkdocs-material from 9.6.9 to 9.6.16

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 9.6.9 to 9.6.16.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.6.9...9.6.16)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-version: 9.6.16
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements-docs.txt

@@ -1,7 +1,7 @@
 # Documentation requirements for TMD Processor
 
 # For building and serving documentation
-mkdocs-material==9.6.9
+mkdocs-material==9.6.16
 mkdocs==1.6.1
 mkdocstrings>=0.20.0
 mkdocstrings-python>=1.0.0