Bump mkdocs-autorefs from 0.3.1 to 0.4.1

Bumps [mkdocs-autorefs](https://github.com/mkdocstrings/autorefs) from 0.3.1 to 0.4.1.
- [Release notes](https://github.com/mkdocstrings/autorefs/releases)
- [Changelog](https://github.com/mkdocstrings/autorefs/blob/master/CHANGELOG.md)
- [Commits](mkdocstrings/autorefs@0.3.1...0.4.1)

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

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

docs/requirements.txt

@@ -1,5 +1,5 @@
 mkdocs==1.2.3
-mkdocs-autorefs==0.3.1
+mkdocs-autorefs==0.4.1
 mkdocs-awesome-pages-plugin==2.6.1
 mkdocs-material==8.1.9
 mkdocs-material-extensions==1.0.3