Bump mkdocs-material-extensions from 1.1.1 to 1.3.1

Bumps [mkdocs-material-extensions](https://github.com/facelessuser/mkdocs-material-extensions) from 1.1.1 to 1.3.1.
- [Release notes](https://github.com/facelessuser/mkdocs-material-extensions/releases)
- [Changelog](https://github.com/facelessuser/mkdocs-material-extensions/blob/master/changelog.md)
- [Commits](facelessuser/mkdocs-material-extensions@1.1.1...1.3.1)

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

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

requirements.txt

@@ -1,4 +1,4 @@
 mkdocs==1.6.1
 mkdocs-material==9.5.49
-mkdocs-material-extensions==1.1.1
+mkdocs-material-extensions==1.3.1
 mkdocs-git-revision-date-localized-plugin==1.1.0