Update aws_lambda_powertools/utilities/data_classes/dynamo_db_stream_event.py

Co-authored-by: Leandro Damascena <lcdama@amazon.pt>
Signed-off-by: kiitosu <kh0412@gmail.com>

Author: kiitosu

aws_lambda_powertools/utilities/data_classes/dynamo_db_stream_event.py

@@ -185,7 +185,7 @@ def records(self) -> Iterator[DynamoDBRecord]:
     def window(self) -> DynamoDBStreamWindow | None:
         window = self.get("window")
         if window:
-            return KinesisStreamWindow(window)
+            return DynamoDBStreamWindow(window)
         return window
 
     @property