Fix for linting

Co-authored-by: Kevin Liu <kevinjqliu@users.noreply.github.com>

pyiceberg/catalog/hive.py

@@ -279,7 +279,7 @@ def _create_hive_client(properties: Dict[str, str]) -> _HiveClient:
                 return _HiveClient(uri, properties.get("ugi"))
             except BaseException as e:
                 last_exception = e
-        if last_exception not None:
+        if last_exception is not None:
             raise e
         else:
             raise ValueError(f"Unable to connect to hive using uri: {properties["uri"]}")