chore(deps): update postgres docker tag to v18

Reviewed-on: #13

compose.backup.yml

@@ -1,7 +1,7 @@
 version: "3.8"
 services:
   zammad-backup:
-    image: ghcr.io/zammad/zammad:7.2.0
+    image: ghcr.io/zammad/zammad:7.2.1
     command: ["zammad-backup"]
     volumes:
       - zammad-backup:/var/tmp/zammad

compose.yml

@@ -45,7 +45,6 @@ x-shared:
       SSO_PROVIDER_DOMAIN:
       IDP_SSO_TARGET_URL:
       IDP_SLO_SERVICE_URL:
-    image: ghcr.io/zammad/zammad:7.2.0
     deploy:
       restart_policy:
         condition: on-failure
@@ -93,6 +92,7 @@ services:
 
   zammad-init:
     <<: *zammad-service
+    image: ghcr.io/zammad/zammad:7.2.1
     command: ["zammad-init"]
     depends_on:
       - zammad-postgresql
@@ -113,6 +113,7 @@ services:
 
   app:
     <<: *zammad-service
+    image: ghcr.io/zammad/zammad:7.2.1
     command: ["zammad-nginx"]
     #expose:
     #  - 8080
@@ -134,7 +135,7 @@ services:
         - "traefik.http.routers.${STACK_NAME}.middlewares=${STACK_NAME}-redirect"
         - "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLForceHost=true"
         - "traefik.http.middlewares.${STACK_NAME}-redirect.headers.SSLHost=${DOMAIN}"
-        - "coop-cloud.${STACK_NAME}.version=4.2.0+7.2.0"
+        - "coop-cloud.${STACK_NAME}.version=4.3.0+7.2.1"
         - "coop-cloud.${STACK_NAME}.timeout=${TIMEOUT:-120}"
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8080"]
@@ -144,7 +145,7 @@ services:
       start_period: 5m
 
   zammad-postgresql:
-    image: postgres:15.7-alpine
+    image: postgres:18.6-alpine
     environment:
       POSTGRES_DB: zammad_production
       POSTGRES_USER: zammad
@@ -176,6 +177,7 @@ services:
 
   zammad-railsserver:
     <<: *zammad-service
+    image: ghcr.io/zammad/zammad:7.2.1
     command: ["zammad-railsserver"]
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:3000"]
@@ -208,6 +210,7 @@ services:
 
   zammad-scheduler:
     <<: *zammad-service
+    image: ghcr.io/zammad/zammad:7.2.1
     command: ["zammad-scheduler"]
     healthcheck:
       test: 'grep -a "background-worker.rb" -r /proc/[0-9]*/cmdline'
@@ -218,6 +221,7 @@ services:
 
   zammad-websocket:
     <<: *zammad-service
+    image: ghcr.io/zammad/zammad:7.2.1
     command: ["zammad-websocket"]
     healthcheck:
       test: 'ruby -rsocket -e "s = TCPSocket.new(''localhost'', 6042); s.close"'