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What does this MR do and why?

切换 Danger 机器人所使用的 gitlab-dangerfiles 到 gitlab-dangerfiles-jh

关于 gitlab-dangerfiles-jh gem 的改动参见

• gitlab-cn/ruby/gems/gitlab-dangerfiles-jh!1 (merged) 翻译 gem 中的文本
• gitlab-cn/ruby/gems/gitlab-dangerfiles-jh!2 (merged) 修复流水线
• gitlab-cn/ruby/gems/gitlab-dangerfiles-jh!3 (merged) 同步测试
• gitlab-cn/ruby/gems/gitlab-dangerfiles-jh!4 (merged) 修正翻译中的格式化字符串问题

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How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.