ci: auto-merge github-actions group updates (incl. major)

Author: pocketrocket

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

@@ -16,8 +16,8 @@ jobs:
         uses: dependabot/fetch-metadata@v2
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
-      - name: Auto-merge minor & patch
-        if: ${{ steps.meta.outputs.update-type == 'version-update:semver-minor' || steps.meta.outputs.update-type == 'version-update:semver-patch' }}
+      - name: Auto-merge minor, patch & github-actions
+        if: ${{ steps.meta.outputs.update-type == 'version-update:semver-minor' || steps.meta.outputs.update-type == 'version-update:semver-patch' || steps.meta.outputs.dependency-group == 'github-actions' }}
         run: gh pr merge --auto --squash "$PR_URL"
         env:
           PR_URL: ${{ github.event.pull_request.html_url }}