ci: update auto merge workflow

Author: scriptcoded

.github/workflows/auto-merge.yml

@@ -6,9 +6,10 @@ on:
 jobs:
   auto-merge:
     runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+      contents: write
     steps:
-      - uses: actions/checkout@v4
-      - uses: ahmadnassri/action-dependabot-auto-merge@v2
+      - uses: fastify/[email protected]
         with:
-          target: minor
-          github-token: ${{ secrets.ACTIONS_GITHUB_TOKEN }}
+          target: 'minor'