ci: move to latest lock-closed commit for github action

Author: josephperrott

.github/workflows/lock-closed.yml

@@ -9,7 +9,7 @@ jobs:
   lock_closed:
     runs-on: ubuntu-latest
     steps:
-      - uses: angular/dev-infra/github-actions/lock-closed@1e03b0d
+      - uses: angular/dev-infra/github-actions/lock-closed@7f7ef07
         with:
           lock-bot-key: ${{ secrets.LOCK_BOT_PRIVATE_KEY }}
-          locks-per-execution: 250
+          locks-per-execution: 100