fix: change dynamodb2 batch write response

moto/dynamodb2/responses.py

@@ -179,14 +179,14 @@ class DynamoHandler(BaseResponse):
                     item = dynamodb_backend2.delete_item(table_name, keys)
 
         response = {
-            "Responses": {
+            "ConsumedCapacity": [
-                "Thread": {
+                {
-                    "ConsumedCapacityUnits": 1.0
+                    'TableName': table_name,
-                },
+                    'CapacityUnits': 1.0,
-                "Reply": {
+                    'Table': {'CapacityUnits': 1.0}
-                    "ConsumedCapacityUnits": 1.0
+                } for table_name, table_requests in table_batches.items()
-                }
+            ],
-            },
+            "ItemCollectionMetrics": {},
             "UnprocessedItems": {}
         }