Dequarantine Jenkins integration spec

What does this MR do?

Dequarantines jenkins_build_status_spec.rb:

• Fix was merged !27681 (merged)
• Test successfully passed in Nightly:
  • https://gitlab.com/gitlab-org/quality/nightly/-/jobs/487723143#L7834
  • https://gitlab.com/gitlab-org/quality/nightly/-/jobs/489179763#L6436
  • https://gitlab.com/gitlab-org/quality/nightly/-/jobs/489601588#L5671
  • https://gitlab.com/gitlab-org/quality/nightly/-/jobs/490172825#L8213

Closes #195179 (closed)

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• [-] Merge request performance guidelines
• Style guides
• [-] Database guides
• Separation of EE specific content