Fix: echo to $GITHUB_OUTPUT

.github/workflows/minimal-tests-bindings.yml

@@ -18,14 +18,17 @@ jobs:
   # This step allows 2mins before we check comments for binding repos/refs.
   grace-period:
     runs-on: ubuntu-latest
+    outputs:
+      pr-number: ${{ steps.set-output.outputs.pr-number }}
     steps:
       # This workflow runs for both merge_group and pull_request
       # We need a way to get the pull request number that works for both cases.
       # The action can do that.
       - id: get-pr-number
         uses: mgaitan/gha-get-pr-number@main
       # This job also outputs the PR number
-      - run: echo "pr-number=${{ steps.get-pr-number.outputs.number }}"
+      - id: set-output
+        run: echo "pr-number=${{ steps.get-pr-number.outputs.number }}" >> $GITHUB_OUTPUT
       # Sleep for 2 mins
       - run: sleep 120