Bump mkdocs from 1.6.0 to 1.6.1

Bumps [mkdocs](https://github.com/mkdocs/mkdocs) from 1.6.0 to 1.6.1.
- [Release notes](https://github.com/mkdocs/mkdocs/releases)
- [Commits](mkdocs/mkdocs@1.6.0...1.6.1)

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

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

requirements.txt

@@ -1,6 +1,6 @@
 markdown == 3.6
 markdown_include == 0.8.1
 mdx_truly_sane_lists == 1.3
-mkdocs == 1.6.0
+mkdocs == 1.6.1
 smarty == 0.3.3
 jinja2==3.1.4