[CORE-105] Allow single approval for dependabot PRs (#498)

Allow single approval for dependabot PRs

.github/workflows/auto-approve-dependabot-prs.yml

@@ -0,0 +1,21 @@
+name: Dependabot auto-approve
+on: pull_request
+
+permissions:
+  pull-requests: write
+
+jobs:
+  dependabot:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - name: Dependabot metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v2
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+      - name: Approve a PR
+        run: gh pr review --approve "$PR_URL"
+        env:
+          PR_URL: ${{ github.event.pull_request.html_url }}
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}