Update lock.yml

Retry with organization settings updated... keep forgetting we have this locked down.

.github/workflows/lock.yml

@@ -8,6 +8,7 @@ on:
 permissions:
   issues: write
   pull-requests: write
+  discussions: write
 
 concurrency:
   group: lock-threads
@@ -16,7 +17,7 @@ jobs:
   action:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@v4
+      - uses: dessant/lock-threads@v5
         with:
           github-token: ${{ github.token }}
           issue-inactive-days: '1'