chore(deps): update dessant/lock-threads action to v6 (#261)

Co-authored-by: sander0542-renovate[bot] <193960024+sander0542-renovate[bot]@users.noreply.github.com>

Author: sander0542-renovate[bot]

.github/workflows/lock.yml

@@ -17,4 +17,4 @@ jobs:
   action:
     runs-on: ubuntu-latest
     steps:
-      - uses: dessant/lock-threads@v5
+      - uses: dessant/lock-threads@v6