Refresh docs dependencies

Author: mdmintz

mkdocs_build/requirements.txt

@@ -15,7 +15,7 @@ click==8.0.3;python_version>="3.6"
 zipp==3.7.0;python_version>="3.7"
 readme-renderer==32.0
 pymdown-extensions==9.2;python_version>="3.7"
-importlib-metadata==4.11.0;python_version>="3.7"
+importlib-metadata==4.11.1;python_version>="3.7"
 bleach==4.1.0
 jsmin==3.0.1;python_version>="3.6"
 lunr==0.6.1;python_version>="3.6"