Update tests/server/routes/test_jsonrpc_route.py

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: guglielmo-san

tests/server/routes/test_jsonrpc_route.py

@@ -233,7 +233,7 @@ def test_v0_3_compat_flag_routes_to_dispatcher(self, mock_handler):
 
         # Instead of _v03_adapter, the handler handles it or it's dispatcher
         with patch.object(
-            router.dispatcher,
+            routes.dispatcher,
             '_process_non_streaming_request',
             new_callable=AsyncMock,
         ) as mock_handle: