[QUARANTINE] Verify Parent-child pipelines independent relationship parent pipelines passes if child passes

What does this MR do?

Quarantines the test Verify Parent-child pipelines independent relationship parent pipelines passes if child passes (https://gitlab.com/gitlab-org/gitlab/-/blob/master/qa/qa/specs/features/browser_ui/4_verify/pipeline/parent_child_pipelines_independent_relationship_spec.rb#L29)

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

1. ee:relative_url-parallel
2. ee:update-parallel
3. ee:praefect-parallel

#358260 (closed)

(This MR was automatically generated by Confiner at 2022-04-13 01:38:20 UTC)