chore(ci): auto-merge dependabot pull requests (#119)

Author: skyrpex

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

@@ -0,0 +1,22 @@
+name: Dependabot Auto-merge
+
+on:
+  pull_request:
+    branches: ["main"]
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  auto-merge:
+    name: Auto-merge
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+
+    steps:
+      - name: Enable auto-merge
+        run: gh pr merge --auto --squash "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}