For dependabot we dont want it anyway (but it is true by default).
Also remove it for "merge via auto-label", so that once all the
conditions are met the PR is queued and the label is removed.
Currently the queuing might not happen because the branch protection
is not met. Therefore we make the condition explicit and remove the
branch protection.
Define a merge queue "default", with all current checks (minus the
ostree one) are required to get out of.
Two rules to get into the queue: 1) standard branch protection,
plus packit, plus the ci:automerge
2) dependabot, does not require the standard branch protection
since that implies reviews. Instead the checks are manually
listed.
