Prepare 18.9.6 release for omnibus-gitlab-jh

🤖 JiHu Bot 🤖请求合并
18-9-stable-jh-patch-6 到18-9-stable-jh

Release issue: https://jihulab.com/gitlab-cn/release/tasks/-/work_items/411

Summary

This MR prepares 18-9-stable-jh for 18.9.6.

Automated cherry-picking

Merge requests labeled ~"Pick into 18.9" should be automatically picked into this MR.

Manual intervention

If merge requests cannot be picked automatically they have to be created manually targeting 18-9-stable-jh-patch-6.

See also Patch Releases documentation.

合并请求报告