Use bot credential for preview page generated by dependabot

Author: hsbt

.github/workflows/cloudflare-preview.yml

@@ -92,6 +92,7 @@ jobs:
       - name: Comment on PR with preview URL
         uses: actions/github-script@v7
         with:
+          github-token: ${{ secrets.MATZBOT_GITHUB_TOKEN }}
           script: |
             const prNumber = ${{ env.PR_NUMBER }};
             const url = "${{ steps.deploy.outputs.deployment-url }}";