build(deps): Bump mkdocs-material from 7.0.2 to 7.0.6

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 7.0.2 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@7.0.2...7.0.6)

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

requirements.txt

@@ -3,7 +3,7 @@ docker==4.4.4
 Markdown==3.3.4
 markdown2==2.4.0
 matplotlib==3.3.4
-mkdocs-material==7.0.2
+mkdocs-material==7.0.6
 pre-commit==2.11.1
 pytest==6.2.2
 pytest-cov==2.11.1