Auto approve dependabot PRs (#999)

Author: zajck

.github/workflows/auto-approve.yml

@@ -0,0 +1,15 @@
+name: Auto approve
+
+on: pull_request_target
+
+jobs:
+  auto-approve:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - uses: hmarr/auto-approve-action@v4
+        with:
+          review-message: "Auto approved automated PR"
+          github-token: ${{ secrets.GITHUB_TOKEN }}