chore(deps): update postgres docker tag to v18.4

docker-compose.prod.yml

@@ -33,7 +33,7 @@ services:
     restart: unless-stopped
 
   db-prod:
-    image: postgres:18.3-alpine
+    image: postgres:18.4-alpine
     container_name: mv-prod-db
     environment:
       POSTGRES_USER: postgres

docker-compose.yml

@@ -4,7 +4,7 @@ networks:
 
 services:
   db:
-    image: postgres:18.3-alpine
+    image: postgres:18.4-alpine
     environment:
       POSTGRES_USER: postgres
       POSTGRES_PASSWORD: postgres