Add runner PCL to release checklist
What does this MR do?
Add runner PCL to release checklist
Why was this MR needed?
Part of the corrective action from https://gitlab.com/gitlab-com/gl-infra/production/-/issues/3685
What's the best way to test this MR?
What are the relevant issue numbers?
https://gitlab.com/gitlab-com/gl-infra/production/-/issues/3685