Refresh mkdocs dependencies

Author: mdmintz

mkdocs_build/requirements.txt

@@ -23,12 +23,12 @@ nltk==3.8.1
 tornado==6.3.2
 watchdog==3.0.0
 cairocffi==1.6.1
-cairosvg==2.7.0
+cairosvg==2.7.1
 cssselect2==0.7.0
 tinycss2==1.2.1
 defusedxml==0.7.1
 pathspec==0.11.2
-mkdocs==1.5.1
+mkdocs==1.5.2
 mkdocs-material==9.1.21
 mkdocs-exclude-search==0.6.5
 mkdocs-simple-hooks==0.1.5