Skip fail job temporarily

What does this MR do and why?

Failed job: https://jihulab.com/gitlab-cn/gitlab/-/jobs/5006821

 Onboarding::PipelineIssueService#execute when learning ci issue with step 6 would create last note if artifact exist
     Failure/Error: subject(:execute) { described_class.new(issue, pipeline).execute }
     NameError:
       uninitialized constant Namespaces::OnboardingPipelineCreatedWorker

/cc @lyb124553153

/cc EM @prajnamas