[Compose] Update SOGo image

docker-compose.yml

@@ -143,7 +143,7 @@ services:
             - phpfpm
 
     sogo-mailcow:
-      image: mailcow/sogo:1.19
+      image: mailcow/sogo:1.20
       build: ./data/Dockerfiles/sogo
       environment:
         - DBNAME=${DBNAME}