ci(auto-merge): add auto-merge

Add auto-merge

.github/workflows/auto-merge.yml

@@ -0,0 +1,33 @@
+name: auto-merge
+
+on:
+  pull_request_target:
+    types:
+      - opened
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  auto-merge:
+    if: ${{ github.actor == 'dependabot[bot]' }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Dependabot metadata
+        id: dependabot-metadata
+        uses: dependabot/fetch-metadata@v1.6.0
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Approve Pull Request
+        if: ${{ steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major' }}
+        run: gh pr review -R "${{ github.repository }}" --approve "${{ github.event.pull_request.number }}"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Enable auto-merge for Dependabot PRs
+        if: ${{ steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major' }}
+        run: gh pr merge -R "${{ github.repository }}" --merge --auto "${{ github.event.pull_request.number }}"
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}