feat(container): update image postgres ( 18.3 → 18.4 )

Author: renovate[bot]

docker/vps/docker-compose.yml

@@ -112,7 +112,7 @@ services:
       - racknerd
 
   postgres:
-    image: postgres:18.3
+    image: postgres:18.4
     container_name: postgres
     restart: unless-stopped
     environment: