Bump mkdocs-material from 9.6.18 to 9.6.19 (#68)

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 9.6.18 to 9.6.19.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.6.18...9.6.19)

---
updated-dependencies:
- dependency-name: mkdocs-material
  dependency-version: 9.6.19
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,4 +1,4 @@
-mkdocs-material==9.6.18
+mkdocs-material==9.6.19
 mkdocs-git-revision-date-localized-plugin==1.4.7
 mkdocs-glightbox==0.4.0