style: add trailing comma required by pre-commit hook

Author: agentscope-ai-java

tests/unit/test_agentstudio_deployments.py

@@ -285,7 +285,7 @@ async def exercise() -> None:
             "biz": "summary",
         }
         assert client.transport.calls[0]["json"]["environment_variables"] == {
-            "API_BASE_URL": "https://example.test"
+            "API_BASE_URL": "https://example.test",
         }
         assert run.id == "drun_01"
         assert runs.data[0].id == "drun_01"