fix(ci): require changes to run before downloading artifacts (#23283)

* Require changes before downloading artifacts

* Replace needs with an if

Author: thomasqueirozb

.github/workflows/integration.yml

@@ -104,6 +104,7 @@ jobs:
 
       - name: Download JSON artifact from changes.yml
         uses: actions/download-artifact@v4
+        if: github.event_name == 'pull_request' || github.event_name == 'merge_group'
         with:
           name: int_tests_changes