Bump mkdocs-material from 5.5.0 to 5.5.3 (#4533)
Bump mkdocs-material from 5.5.0 to 5.5.3 (#4533)

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 5.5.0 to 5.5.3.
- [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...5.5.3)

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

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>
allenai/allennlp,allenai/allennlp,allenai/allennlp,allenai/allennlp