chore(deps): update postgres docker tag to v18.3

Author: renovate[bot]

compose.yaml

@@ -109,7 +109,7 @@ services:
       - mssql
 
   hive-metastore-db:
-    image: postgres:18.1-alpine
+    image: postgres:18.3-alpine
     environment:
       POSTGRES_USER: admin
       POSTGRES_PASSWORD: admin
@@ -199,7 +199,7 @@ services:
       - $PWD/docker/trino/jvm.config:/etc/trino/jvm.config:ro
 
   druid-postgres:
-    image: postgres:18.1-alpine
+    image: postgres:18.3-alpine
     container_name: druid-postgres
     environment:
       POSTGRES_PASSWORD: FoolishPassword