Bump mkdocs from 1.5.3 to 1.6.1 (#245)

Bumps [mkdocs](https://github.com/mkdocs/mkdocs) from 1.5.3 to 1.6.1.
- [Release notes](https://github.com/mkdocs/mkdocs/releases)
- [Commits](mkdocs/mkdocs@1.5.3...1.6.1)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements-docs.txt

@@ -1,4 +1,4 @@
-mkdocs==1.5.3
+mkdocs==1.6.1
 mkdocs-material==9.6.9
 pymdown-extensions==10.7.1
 mike==2.0.0