fix test

Author: kcons

tests/sentry/workflow_engine/endpoints/test_organization_workflow_details.py

@@ -96,7 +96,7 @@ def test_audit_entry(self):
 
     def test_does_not_exist(self):
         with outbox_runner():
-            response = self.get_error_response(self.organization.slug, -1)
+            response = self.get_error_response(self.organization.slug, 999999999)
             assert response.status_code == 404
 
         # Ensure it wasn't deleted