- switch the bot from looking at the `bug/crash` labels which we don't
  use anymore to the Bug/Crash issue types which we do use
- shorten the period of time after which a bug is suspected to be stale
  (with our pace they can indeed be outdated in 60 days)
- extend the grace period for someone to come around and say nope, this
  problem still exists (people might be away for a couple of weeks).


Release Notes:

- N/A