机器人自定义菜单事件，回调时时间戳反序列化失败

[Aatroy]

https://open.feishu.cn/document/client-docs/bot-v3/bot-customized-menu
文档中提到时间戳为 string

P2BotMenuV6Data.P2BotMenuV6Data 中 时间戳Timestamp为 *string

但回调的时候时间戳为 int 类型

"{"schema":"2.0","header":{"event_id":"xxx","token":"xxx","create_time":"1694592375000","event_type":"application.bot.menu_v6","tenant_key":"xxx","app_id":"xxx"},"event":{"event_key":"xxx","operator":{"operator_id":{xxx},"timestamp":1694592375}}"

[Aatroy]

项目使用 3.0.24版本。更换版本为 3.0.28后，发现已更改为int64，但官网文档仍为string。