When running `/chatops run release tracking_issue --security` to close the old and create a new security release issue the job was failing with ``` 2021-04-28 13:12:43.789280 F Rake::Task -- Task failed -- Exception: RuntimeError: Milestone 13.13 not found for project gitlab-org/gitlab! ``` This is probably because we will never have a 13.13 milestone, as we are doing a major version upgrade to 14.0 next time. We need to find a solution for this case as developers need a new issue to assign security issues to right after the old one was closed.