[ACME] Push new image version

docker-compose.yml

@@ -300,7 +300,7 @@ services:
     acme-mailcow:
       depends_on:
         - nginx-mailcow
-      image: mailcow/acme:1.14
+      image: mailcow/acme:1.15
       build: ./data/Dockerfiles/acme
       dns:
         - 172.22.1.254