Update src/aws_durable_execution_sdk_python_testing/executor.py

Co-authored-by: Brent Champion <brchamp@amazon.com>

Author: rarepolz

src/aws_durable_execution_sdk_python_testing/executor.py

@@ -445,7 +445,7 @@ def get_execution_history(
                 context: EventCreationContext = EventCreationContext(
                     op,
                     event_id,
-                    execution.durable_execution_arn,
+                    durable_execution_arn,
                     execution.start_input,
                     execution.result,
                     operation_update,