Merge pull request #970 from arduino/dependabot/pip/mkdocs-material-9.6.21

Bump mkdocs-material from 9.6.20 to 9.6.21

Author: per1234

poetry.lock

@@ -23,7 +23,7 @@ invoke = "^2.2.0"
 mdx_truly_sane_lists = "^1.3"
 mike = "^2.1.3"
 mkdocs = "^1.5.3"
-mkdocs-material = "^9.6.20"
+mkdocs-material = "^9.6.21"
 pep8-naming = "^0.15.1"
 pytest = "^8.4.2"
 python-dateutil = "^2.9.0"