Use an access token that can update workflow files

Refs 7ad936d

.github/workflows/fix-playwright-versions.yml

@@ -5,17 +5,20 @@ on:
     branches:
       - 'dependabot/npm_and_yarn/playwright/test-*'
 
+permissions:
+  contents: read
+
 jobs:
   fix-playwright-versions:
     name: 'Fix Playwright versions'
     runs-on: ubuntu-22.04
     timeout-minutes: 30
-    permissions:
-      contents: write
 
     steps:
       - name: 'Checkout code'
         uses: actions/[email protected]
+        with:
+          token: ${{ secrets.PREREVIEW_BOT_TOKEN }}
 
       - name: 'Set up Node.js'
         uses: actions/[email protected]