[QUARANTINE] [nightly] Verify Multi-project pipelines creates a multi-project pipeline with artifact download

What does this MR do?

Quarantines the test Verify Multi-project pipelines creates a multi-project pipeline with artifact download (https://gitlab.com/gitlab-org/gitlab/-/blob/master/qa/qa/specs/features/browser_ui/4_verify/pipeline/multi-project_pipelines_spec.rb#L47)

This test has been found by Confiner to have failed 31 times, which exceeds the threshold of 3 times.

1. ce:update
2. ee-previous-to-ce:update
3. ce:upgrade
4. ce:instance-image
5. ce:instance-image-slow-network
6. ce:nplus1-instance-image
7. ce:update
8. ee-previous-to-ce:update
9. ce:upgrade
10. ce:instance-image
11. ce:nplus1-instance-image
12. ce:instance-image-slow-network
13. ce:update
14. ee-previous-to-ce:update
15. ce:upgrade
16. ce:instance-image
17. ce:instance-image-slow-network
18. ce:nplus1-instance-image
19. ce:update
20. ee-previous-to-ce:update
21. ce:upgrade
22. ce:instance-image
23. ce:instance-image-slow-network
24. ce:nplus1-instance-image
25. ee-previous-to-ce:update
26. ce:upgrade
27. ce:instance-image
28. ce:instance-image-slow-network
29. ee:instance-image-slow-network
30. ce:nplus1-instance-image
31. ce:update

#360416 (closed)

(This MR was automatically generated by Confiner at 2022-05-25 01:17:42 UTC)