[QUARANTINE] Create Push Rules using non signed commits restricts committing files with secrets

What does this MR do?

Quarantines the test Create Push Rules using non signed commits restricts committing files with secrets (https://gitlab.com/gitlab-org/gitlab/-/blob/master/qa/qa/specs/features/ee/browser_ui/3_create/repository/push_rules_spec.rb#L82)

This test has been found by Confiner to have been failing for more than (or equal to) 3 times. This test has failed 4 times.

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

#299081 (closed)

(This MR was automatically generated by Confiner at 2022-01-21 02:03:17 UTC)