Ensure sandbox tests run

Author: dlzhry2nhs

.github/workflows/deploy-backend.yml

@@ -158,7 +158,7 @@ jobs:
 
   run-e2e-tests:
     needs: [terraform-apply]
-    if: ${{ needs.terraform-apply.result == 'success' || needs.terraform-apply.result == 'skipped' }}
+    if: ${{ needs.terraform-apply.result != 'failure' && needs.terraform-apply.result != 'cancelled' }}
     uses: ./.github/workflows/run-e2e-tests.yml
     with:
       apigee_environment: ${{ inputs.apigee_environment }}