Update docs dependencies

Author: mdmintz

docs/requirements.txt

@@ -11,7 +11,7 @@ importlib-metadata==4.0.1;python_version>="3.6"
 lunr==0.5.8
 mkdocs==1.1.2
 mkdocs-material==7.1.3
-mkdocs-exclude-search==0.5.1;python_version>="3.6"
+mkdocs-exclude-search==0.5.2;python_version>="3.6"
 mkdocs-simple-hooks==0.1.3
 mkdocs-material-extensions==1.0.1
 mkdocs-minify-plugin==0.4.0