Bump mkdocs-material from 5.3.2 to 5.3.3

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 5.3.2 to 5.3.3.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](https://github.com/squidfunk/mkdocs-material/compare/5.3.2...5.3.3)

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

docs/requirements-docs.txt

@@ -1,2 +1,2 @@
-mkdocs-material==5.3.2
+mkdocs-material==5.3.3
 mdx_truly_sane_lists==1.2