add zizmor to scan workflows

.github/workflows/lock.yaml

@@ -7,15 +7,17 @@ name: Lock inactive closed issues
 on:
   schedule:
     - cron: '0 0 * * *'
-permissions:
-  issues: write
-  pull-requests: write
-  discussions: write
+permissions: {}
 concurrency:
   group: lock
+  cancel-in-progress: true
 jobs:
   lock:
     runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+      discussions: write
     steps:
       - uses: dessant/lock-threads@7266a7ce5c1df01b1c6db85bf8cd86c737dadbe7 # v6.0.0
         with: