ci: Enable auto merge for dependabot

Signed-off-by: Xuanwo <[email protected]>

.github/workflows/auto-build.yml

@@ -6,16 +6,22 @@ permissions:
   contents: write
 
 jobs:
-  dependabot:
+  metadata:
     runs-on: ubuntu-latest
-    if: ${{ github.actor == 'dependabot[bot]' }}
+    outputs:
+      dependency-names: ${{ steps.metadata.outputs.dependency-names }}
     steps:
       - name: Dependabot metadata
+        uses: Xuanwo/[email protected]
         id: metadata
-        uses: dependabot/[email protected]
         with:
           github-token: "${{ secrets.GITHUB_TOKEN }}"
 
+  dependabot:
+    needs: metadata
+    if: ${{ needs.metadata.outputs.dependency-names != '' }}
+    runs-on: ubuntu-latest
+    steps:
       - name: Set up Go 1.x
         uses: actions/setup-go@v2
         with:
@@ -32,5 +38,12 @@ jobs:
 
       - name: Auto commit
         uses: stefanzweifel/git-auto-commit-action@v4
+        if: ${{contains(needs.metadata.outputs.dependency-names, 'github.com/beyondstorage/go-storage/v4')}}
         with:
           commit_message: Auto build to generate code
+
+      - name: Enable auto-merge for dependabot PRs
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GITHUB_TOKEN: ${{ secrets.ROBOT_GITHUB_TOKEN }}