No slack failures being seen for stable and tag failures
Summary
The most recent 1-9-stable branch failed, and we didn't get a slack notification. In fact in dev, the tag itself failed and we didn't get notified.
We should ensure we are getting notifications for dev failures, for tags and stable branches.
This resulted in us not immediately realising the release had not gone out: https://gitlab.com/charts/gitlab/issues/1362