Approve pull request only if not already approved (#883)

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

@@ -17,7 +17,15 @@ jobs:
 
       - name: Approve and label updates
         run: |
-          gh pr review --approve "$PR_URL"
+          review_status="$(
+              gh pr view "$PR_URL" \
+                  --json="reviewDecision" \
+                  --jq=".reviewDecision"
+          )"
+          echo "Pull request review status: ${review_status}"
+          if [[ "${review_status}" != "APPROVED" ]]; then
+              gh pr review --approve "$PR_URL"
+          fi
           gh pr edit --add-label "cleanup-no-release-required" "$PR_URL"
         env:
           PR_URL: ${{ github.event.pull_request.html_url }}