Update mkdocs-material requirement from <7.1.0,>=5.5.0 to >=5.5.0,<7.2.0 (#5074)
Update mkdocs-material requirement from <7.1.0,>=5.5.0 to >=5.5.0,<7.2.0 (#5074)

Updates the requirements on [mkdocs-material](https://github.com/squidfunk/mkdocs-material) to permit the latest version.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/docs/changelog.md)
- [Commits](https://github.com/squidfunk/mkdocs-material/compare/5.5.0...7.1.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
Co-authored-by: Dirk Groeneveld <b073420333c2c092702568e29c33453b1b3fc728@allenai.org>
allenai/allennlp,allenai/allennlp,allenai/allennlp,allenai/allennlp