Merge pull request #543 from WoltLab/dependabot/pip/mkdocs-material-9.6.21

Bump mkdocs-material from 9.6.16 to 9.6.21

Author: dtdesign

requirements.txt

@@ -2,6 +2,6 @@ Markdown==3.9
 mike==2.1.3
 mkdocs-git-revision-date-plugin==0.3.2
 mkdocs-macros-plugin==1.4.0 
-mkdocs-material==9.6.16
+mkdocs-material==9.6.21
 mkdocs==1.6.1
 setuptools==80.9.0