ci: add contributors auto merge job

.github/workflows/automerge.yml → .github/workflows/auto-merge.yml

@@ -1,4 +1,4 @@
-name: Dependabot auto-merge
+name: Auto-merge
 on: pull_request
 
 permissions:
@@ -25,3 +25,19 @@ jobs:
         env:
           PR_URL: ${{github.event.pull_request.html_url}}
           GH_TOKEN: ${{secrets.GITHUB_TOKEN}}
+  contributors:
+    runs-on: ubuntu-latest
+    if: github.event.pull_request.user.login == 'github-actions[bot]'
+    steps:
+      - name: Approve PR
+        if: contains(github.event.pull_request.title, 'docs(contributor)')
+        run: gh pr review --approve "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GH_TOKEN: ${{secrets.GH_PERSONAL_ACCESS_TOKEN}}
+      - name: Enable auto-merge
+        if: contains(github.event.pull_request.title, 'docs(contributor)')
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GH_TOKEN: ${{secrets.GH_PERSONAL_ACCESS_TOKEN}}