Update gitlab/gitlab-ce Docker tag to v18.10.3

Author: renovate[bot]

ops/docker-compose/tooling/saas/gitlab/compose.yaml

@@ -34,7 +34,7 @@ services:
     <<: *network
     depends_on:
       - gitlab_postgres
-    image: gitlab/gitlab-ce:18.9.2-ce.0
+    image: gitlab/gitlab-ce:18.10.3-ce.0
     hostname: localhost
     container_name: gitlab
     restart: always