Merge pull request #1205 from ChristianLempa/renovate/docker.io-gitlab-gitlab-ce-18.x

docker-compose/gitlab/compose.yaml

@@ -1,7 +1,7 @@
 ---
 services:
   gitlab:
-    image: docker.io/gitlab/gitlab-ce:18.3.2-ce.0
+    image: docker.io/gitlab/gitlab-ce:18.4.0-ce.0
     container_name: gitlab
     shm_size: '256m'
     environment: {}