chore(deps): update postgres docker tag to v16.3 (#12560)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

docker-compose-pgsql.yml

@@ -14,7 +14,7 @@ services:
       - ./install/docker/setup.json:/usr/src/app/setup.json
 
   postgres:
-    image: postgres:16.1-alpine
+    image: postgres:16.3-alpine
     restart: unless-stopped
     environment:
       POSTGRES_USER: nodebb