fix: strengthen password security - increase bcrypt rounds to 14, add notNull constraint to password field, add pull_policy to docker-compose

docker-compose.prod.yml

@@ -3,6 +3,7 @@ services:
     image: postgres:16-alpine
     container_name: wishlist-postgres
     restart: unless-stopped
+    pull_policy: always
     environment:
       POSTGRES_USER: ${POSTGRES_USER}
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}