Update mkdocs-material requirement

Updates the requirements on [mkdocs-material](https://github.com/squidfunk/mkdocs-material) to permit the latest version.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@7.1.9...9.5.16)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-docs.txt

@@ -2,5 +2,5 @@ markdown-include
 mdx-include >=1.4.1,<2.0.0
 mkdocs >=1.1.2,<2.0.0
 mkdocs-markdownextradata-plugin >=0.1.7,<0.3.0
-mkdocs-material >=7.1.9,<8.0.0
+mkdocs-material >=7.1.9,<10.0.0
 mkdocstrings