CI Lint raises ActiveRecord::ReadOnlyRecord error

• Sentry: https://new-sentry.gitlab.net/organizations/gitlab/issues/?environment=gprd&environment=gprd-cny&project=3&query=Pipeline+is+marked+as+readonly&referrer=issue-list&statsPeriod=14d
• Kibana: https://log.gprd.gitlab.net/app/r/s/H2faD

After running a pipeline simulation with dry_run, @pipeline.skip in Chain::Skip raises an error because dry_run checks for @pipeline.readonly!

temporary* fix - in lib/gitlab/ci/pipeline/chain/skip, add this:

if skipped? && !@pipeline.readonly?
    if @command.save_incompleted

* for more details 👁️ ->