Upgrade mkdocs-material with fix for google fonts

requirements-docs.txt

@@ -11,7 +11,7 @@ mkdocs-gen-files
 mkdocs-git-revision-date-localized-plugin
 mkdocs-glightbox==0.3.7
 mkdocs-literate-nav
-mkdocs-material[imaging]==9.5.14
+mkdocs-material[imaging]==9.5.16
 mkdocs-section-index==0.3.8
 mkdocs-macros-plugin
 mknotebooks==0.8.0