chore(deps-dev): bump mkdocs-material from 9.1.6 to 9.1.8 (aws-powertools#2162)

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

Author: dependabot[bot]

poetry.lock

@@ -82,7 +82,7 @@ mypy-boto3-s3 = "^1.26.116"
 mypy-boto3-xray = "^1.26.11"
 types-requests = "^2.28.11"
 typing-extensions = "^4.4.0"
-mkdocs-material = "^9.1.6"
+mkdocs-material = "^9.1.8"
 filelock = "^3.12.0"
 checksumdir = "^1.2.0"
 mypy-boto3-appconfigdata = "^1.26.70"