fix: replace hard-coded token with GitHub secret i

.github/workflows/workflow_file.yml

@@ -0,0 +1,13 @@
+name: Lock Threads
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v4
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}