Refresh docs' dependencies

Author: mdmintz

mkdocs_build/requirements.txt

@@ -6,12 +6,12 @@ livereload==2.6.3;python_version>="3.6"
 joblib==1.1.0;python_version>="3.6"
 Markdown==3.2.2;python_version>="3.6" and python_version<"3.7"
 Markdown==3.3.6;python_version>="3.7"
-MarkupSafe==2.0.1;python_version>="3.6"
+MarkupSafe==2.1.0;python_version>="3.6"
 pyparsing==3.0.7;python_version>="3.6"
 keyring==23.5.0;python_version>="3.7"
 pkginfo==1.8.2;python_version>="3.6"
 Jinja2==3.0.3;python_version>="3.6"
-click==8.0.3;python_version>="3.6"
+click==8.0.4;python_version>="3.6"
 zipp==3.7.0;python_version>="3.7"
 readme-renderer==32.0
 pymdown-extensions==9.2;python_version>="3.7"
@@ -22,7 +22,7 @@ lunr==0.6.1;python_version>="3.6"
 nltk==3.7;python_version>="3.6"
 watchdog==2.1.6;python_version>="3.6"
 mkdocs==1.2.3;python_version>="3.6"
-mkdocs-material==8.1.11;python_version>="3.6"
+mkdocs-material==8.2.1;python_version>="3.6"
 mkdocs-exclude-search==0.6.4;python_version>="3.6"
 mkdocs-simple-hooks==0.1.5
 mkdocs-material-extensions==1.0.3;python_version>="3.6"