Bump mkdocs-material from 7.0.3 to 7.0.6

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 7.0.3 to 7.0.6.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/docs/changelog.md)
- [Commits](squidfunk/mkdocs-material@7.0.3...7.0.6)

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

requirements-test.txt

@@ -10,4 +10,4 @@ pdbpp==0.10.2
 pydocstyle==5.1.1
 mkdocs==1.1.2
 mkdocstrings==0.15.0
-mkdocs-material==7.0.3
+mkdocs-material==7.0.6