Update mkdocs dependencies

Author: mdmintz

mkdocs_build/requirements.txt

@@ -15,7 +15,7 @@ click==8.1.3
 zipp==3.11.0
 ghp-import==2.1.0
 readme-renderer==37.3
-pymdown-extensions==9.9.1
+pymdown-extensions==9.9.2
 importlib-metadata==6.0.0
 pipdeptree==2.3.3
 bleach==5.0.1