message: Use `pull_request_target` event type for labeling
  This will run in the context of the target branch, so have write permissions even when the PR is from a fork.
diff: on:
  - pull_request:
  + pull_request_target:
  branches:
  - master
  types: [closed]
  jobs:
  - my-action:
  + update-labels:
  if: ${{ github.event.pull_request.merged }}
  runs-on: ubuntu-latest
  steps:
  