message: update label definitions to use plain strings
  The encoding was being added to the label.
diff: @@ -10,5 +10,5 @@ jobs:
  env:
  APPROVALS: "1"
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
  - ADD_LABEL: "PR%3A%20approved"
  - REMOVE_LABEL: "PR%3A%20awaiting%20review"
  + ADD_LABEL: "PR: approved"
  + REMOVE_LABEL: "PR: awaiting review"
  