Update mkdocs dependencies

Author: mdmintz

mkdocs_build/requirements.txt

@@ -14,15 +14,15 @@ click==8.1.3
 ghp-import==2.1.0
 readme-renderer==37.3
 pymdown-extensions==9.10
-importlib-metadata==6.0.0
-pipdeptree==2.5.2
+importlib-metadata==6.1.0
+pipdeptree==2.6.0
 bleach==6.0.0
 lunr==0.6.2
 nltk==3.8.1
 tornado==6.2
-watchdog==2.3.1
+watchdog==3.0.0
 cairocffi==1.5.0
-cairosvg==2.6.0
+cairosvg==2.7.0
 cssselect2==0.7.0
 tinycss2==1.2.1
 defusedxml==0.7.1