ci(github-actions): add auto approve and merge github action (#451)

.github/workflows/auto-merge-dependabot.yml

@@ -0,0 +1,35 @@
+name: Dependabot auto approve and merge
+
+on: pull_request
+
+permissions:
+  pull-requests: write
+  contents: write
+  packages: read
+
+jobs:
+  auto-approve-and-merge:
+    runs-on: ubuntu-latest
+    if: ${{ github.event.pull_request.user.login == 'dependabot[bot]' }}
+    steps:
+      # Extract information about the dependencies being updated by a Dependabot-generated PR
+      - name: Dependabot metadata
+        id: dependabot-metadata
+        uses: dependabot/[email protected]
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+
+      # NOTE: This step is only required if the repository has been configured to Require approval
+      # Checks if update-type is patch or minor, then approve if the PR status is not approved yet.
+      - name: Auto approve patch and minor updates
+        uses: hmarr/auto-approve-action@v4
+        if: ${{steps.dependabot-metadata.outputs.update-type == 'version-update:semver-patch' || steps.dependabot-metadata.outputs.update-type == 'version-update:semver-minor'}}
+
+      # NOTE: Requirements for merge has to be configured in the Branch protection rule page.
+      # To do so, go to repository > Settings > Branches > Edit
+      - name: Enable auto-merge for Dependabot PRs
+        if: ${{ contains(github.event.pull_request.title, 'bump')}}
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}