ci: auto-merge dependabot prs

Author: ParanoidUser

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

@@ -0,0 +1,24 @@
+name: Auto-merge Dependabot PRs
+
+on: pull_request_target
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  merge-dependabot-pr:
+    runs-on: ubuntu-22.04
+    if: ${{ github.event.pull_request.user.login == 'dependabot[bot]' }}
+    steps:
+      - name: Fetch Dependabot metadata
+        id: dependabot-metadata
+        uses: dependabot/fetch-metadata@5ef00187930bafb52d529e0b9c3dff045dfa9851
+
+      - name: Enable auto-merge for minor updates
+        if: ${{ steps.dependabot-metadata.outputs.update-type != 'version-update:semver-major' }}
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          gh pr review --approve ${{ github.event.pull_request.html_url }}
+          gh pr merge --auto --squash ${{ github.event.pull_request.html_url }}