fix integ test for hub

Author: bencrabtree

src/sagemaker/jumpstart/hub/hub.py

@@ -56,8 +56,8 @@ class Hub:
     def __init__(
         self,
         hub_name: str,
+        sagemaker_session: Session,
         bucket_name: Optional[str] = None,
-        sagemaker_session: Optional[Session] = None,
     ) -> None:
         """Instantiates a SageMaker ``Hub``.