Merge remote-tracking branch 'origin/dev_business' into dev_business

liu

昨天 6fb5e5100ec6f45c72c4b39698d0ddbfdef46d5a

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package cn.iocoder.yudao.module.im.service.websocket.notification.group;
 
/**
 * 群解散事件通知
 */
public class GroupDissolveNotification extends BaseGroupNotification {
}