Bump mkdocs-material from 4.6.0 to 4.6.2

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 4.6.0 to 4.6.2.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@4.6.0...4.6.2)

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

docs/requirements-docs.txt

@@ -1,2 +1,2 @@
-mkdocs-material==4.6.0
+mkdocs-material==4.6.2
 mdx_truly_sane_lists==1.2