Prepare 15.8.5 release for omnibus-gitlab-jh
Release issue: https://jihulab.com/gitlab-cn/release/tasks/-/issues/50
Summary
This MR prepares 15-8-stable-jh
for 15.8.5
.
Automated cherry-picking
Merge requests labeled ~"Pick into 15.8" should be automatically picked into this MR.
Manual intervention
If merge requests cannot be picked automatically they have to be created
manually targeting 15-8-stable-jh-patch-5
.
See also Patch Releases documentation.