[Compose] Update watchdog image

[Watchdog] Fix IP detection with multiple networks
[Web] Show API field (no docs, no support, wip)
[Web] haveibeenpwned.com implementation
[Web] User and domain admin ACL (no docs, no support, wip)
[Web] Some minor fixes

docker-compose.yml

@@ -330,7 +330,7 @@ services:
         - /lib/modules:/lib/modules:ro
 
     watchdog-mailcow:
-      image: mailcow/watchdog:1.19
+      image: mailcow/watchdog:1.21
       # Debug
       #command: /watchdog.sh
       build: ./data/Dockerfiles/watchdog