Prepare 17.1.8 release for cng-jh

Release issue: https://jihulab.com/gitlab-cn/release/tasks/-/issues/225

Summary

This MR prepares 17-1-stable-jh for 17.1.8.

Automated cherry-picking

Merge requests labeled ~"Pick into 17.1" should be automatically picked into this MR.

Manual intervention

If merge requests cannot be picked automatically they have to be created manually targeting 17-1-stable-jh-patch-8.

---

See also Patch Releases documentation.