Create issues for feature category updates

Currently the notification for the failing pipelines are:

1. To me via email, as I set up the schedule.
2. In Slack.

The first one is fine and I don't need to change that, but it's easy for me to miss. The second is also easy to miss, and implies a level of urgency that isn't there. With this change we can remove the Slack notification, as a failure will just put an issue directly on our build board, using a project access token user.

A sample issue is at #819 (closed).

For #814 (closed).