Upgrade mkdocs

requirements.txt

@@ -2,7 +2,8 @@ Pygments>=2.4
 markdown>=3.3.3
 pymdown-extensions>=7.0
 mike==1.1.2
-mkdocs==1.4.1
+#mkdocs==1.4.1
+mkdocs>=1.5.3
 mkdocs-awesome-pages-plugin>=2.5.0
 mkdocs-bootstrap>=1.1
 mkdocs-htmlproofer-plugin>=0.0.3