Bump mkdocs from 1.3.0 to 1.6.0

Bumps [mkdocs](https://github.com/mkdocs/mkdocs) from 1.3.0 to 1.6.0.
- [Release notes](https://github.com/mkdocs/mkdocs/releases)
- [Commits](mkdocs/mkdocs@1.3.0...1.6.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements-docs.txt

@@ -15,7 +15,7 @@ livereload==2.6.3
 markdown==3.6
 markupsafe==2.1.5
 mergedeep==1.3.4
-mkdocs==1.3.0
+mkdocs==1.6.0
 mkdocs-material==4.6.3
 mkdocstrings==0.10.0
 packaging==24.1