Automatically merge dependabot PRs

Author: nirinchev

.github/workflows/code_health_fork.yaml

@@ -88,3 +88,19 @@ jobs:
           file: coverage/lcov.info
           git-branch: ${{ github.head_ref || github.ref_name }}
           git-commit: ${{ github.event.pull_request.head.sha || github.sha }}
+
+  merge-dependabot-pr:
+    name: Merge Dependabot PR
+    if: github.event.pull_request.user.login == 'dependabot[bot]'
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+      contents: write
+    needs:
+      - coverage
+    steps:
+      - name: Enable auto-merge for Dependabot PRs
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}