v0.42.0

• Upgrade sigs.k8s.io/controller-runtime to v0.21.0; the minimum supported Kubernetes version is now 1.30
• Add Kafka field userConfig.preferred_zones, type array: List of preferred zone IDs for service
  node placement
• Add ServiceIntegration field kafkaMirrormaker.kafka_mirrormaker.consumer_fetch_max_wait_ms, type
  integer: The maximum amount of time the server will block before answering the fetch request if
  there isn't sufficient data to immediately satisfy consumer_fetch_min_bytes