maybe bad yaml?

Author: gregsdennis

.github/workflows/minimum-open-time.yml

@@ -1,9 +1,9 @@
 name: PR Policy
 on:
-  - pull_request
-  - workflow_dispatch
+  pull_request
+  workflow_dispatch
   # scheduling only on PRs is not directly supported.  See https://github.com/orgs/community/discussions/49960
-  - schedule
+  schedule
     - cron: '0 0 * * *'
 
 jobs: