Use unpacking of dict items

Co-authored-by: Jed Cunningham <66968678+jedcunningham@users.noreply.github.com>

airflow/serialization/serialized_objects.py

@@ -831,8 +831,7 @@ def is_serialized(val):
     def _serialize_params_dict(cls, params: ParamsDict | dict):
         """Serialize Params dict for a DAG or task."""
         serialized_params = {}
-        for idx, item in enumerate(params.items()):
-            k, v = item
+        for idx, (k, v) in enumerate(params.items()):
             # TODO: As of now, we would allow serialization of params which are of type Param only.
             try:
                 class_identity = f"{v.__module__}.{v.__class__.__name__}"