Use lock workflow

.github/lock.yml

@@ -1,3 +0,0 @@
-daysUntilLock: 30
-lockComment: false
-setLockReason: false

.github/workflows/lock.yml

@@ -0,0 +1,17 @@
+name: 'Lock threads'
+
+on:
+  schedule:
+    - cron: '0 0 * * *'
+
+jobs:
+  lock:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: dessant/lock-threads@v2
+        with:
+          github-token: ${{ github.token }}
+          issue-lock-inactive-days: '30'
+          issue-lock-reason: ''
+          pr-lock-inactive-days: '30'
+          pr-lock-reason: ''