chore(deps-dev): bump mkdocs-material from 9.5.20 to 9.5.21 (#4271)

Bumps [mkdocs-material](https://github.com/squidfunk/mkdocs-material) from 9.5.20 to 9.5.21.
- [Release notes](https://github.com/squidfunk/mkdocs-material/releases)
- [Changelog](https://github.com/squidfunk/mkdocs-material/blob/master/CHANGELOG)
- [Commits](squidfunk/mkdocs-material@9.5.20...9.5.21)

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

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

Author: dependabot[bot]

Diff for: poetry.lock

@@ -84,7 +84,7 @@ mypy-boto3-s3 = "^1.34.91"
 mypy-boto3-xray = "^1.34.0"
 types-requests = "^2.31.0"
 typing-extensions = "^4.6.2"
-mkdocs-material = "^9.5.20"
+mkdocs-material = "^9.5.21"
 filelock = "^3.14.0"
 checksumdir = "^1.2.0"
 mypy-boto3-appconfigdata = "^1.34.24"