fix postgresql image provider

Author: strtgbb

tests/integration/compose/docker_compose_iceberg_lakekeeper_catalog.yml

@@ -64,7 +64,7 @@ services:
 
 
   db:
-    image: bitnami/postgresql:16.3.0
+    image: bitnamilegacy/postgresql:16.3.0
     environment:
       - POSTGRESQL_USERNAME=postgres
       - POSTGRESQL_PASSWORD=postgres