[SOGo] Fix timezone bug in previous nightly

docker-compose.yml

@@ -128,7 +128,7 @@ services:
             - phpfpm
 
     sogo-mailcow:
-      image: mailcow/sogo:1.15
+      image: mailcow/sogo:1.16
       build: ./data/Dockerfiles/sogo
       environment:
         - DBNAME=${DBNAME}