Bump mkdocs from 1.2.1 to 1.2.2

Bumps [mkdocs](https://github.com/mkdocs/mkdocs) from 1.2.1 to 1.2.2.
- [Release notes](https://github.com/mkdocs/mkdocs/releases)
- [Commits](https://github.com/mkdocs/mkdocs/compare/1.2.1...1.2.2)

---
updated-dependencies:
- dependency-name: mkdocs
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

docs/requirements.txt

@@ -7,6 +7,6 @@ mkdocs-material-extensions==1.0.1
 mkdocs-material==7.1.10
 mkdocs-minify-plugin==0.4.0
 mkdocs-redirects==1.0.3
-mkdocs==1.2.1
+mkdocs==1.2.2
 pygments==2.9.0
 pymdown-extensions==8.2