message: [tests] Change PR automerge label
  We decided to change this to an explicit label and rely on a separate action to check for correct labels (see
  This action likely won't work for PRs from forks, but that might be okay because our other actions don't work for forks either.
diff: version = 1
  [merge]
  -automerge_label = ["semver-major","semver-minor","semver-patch"]
  +automerge_label = ["pr: automerge"]
  blacklist_title_regex = "^WIP.*"
  blacklist_labels = ["work in progress"]
  method = "squash"
  