Update to mkdocs 1.4.2

Update to mkdocs-material 9.2.3

docker-compose.yml

@@ -3,13 +3,13 @@ version: '3.7'
 services:
   mkdocs:
     container_name: mkdocs
-    image: polinux/mkdocs:1.2.3
+    image: polinux/mkdocs:1.4.2
     restart: unless-stopped
     ports:
       - 8999:8000
     environment:
       LIVE_RELOAD_SUPPORT: 'true'
-      ADD_MODULES: fontawesome-markdown mkdocs-git-revision-date-localized-plugin mkdocs-material==8.3.9 mkdocs-build-plantuml-plugin mkdocs-new-features-notifier mkdocs-git-authors-plugin markdown-include mkdocs-simple-hooks mkdocs-video tzdata
+      ADD_MODULES: fontawesome-markdown mkdocs-git-revision-date-localized-plugin mkdocs-material==9.2.3 mkdocs-build-plantuml-plugin mkdocs-new-features-notifier mkdocs-git-authors-plugin markdown-include mkdocs-simple-hooks mkdocs-video tzdata
       FAST_MODE: 'true'
       DOCS_DIRECTORY: /mkdocs
     volumes: