Bump mkdocs-material from 8.0.2 to 8.1.4 (#2006)

Bump mkdocs-material from 8.0.2 to 8.1.4 (#2006)

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 8.0.2 to 8.1.4.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](https://github.com/squidfunk/mkdocs-material/compare/8.0.2...8.1.4)

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

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