### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When passed to SQS, keys of the messages attributes on SNS are renamed from StringValue to Value and DataType to Type.

### Expected Behavior

The keys should not be renamed

### How are you starting LocalStack?

With a docker-compose file

### Steps To Reproduce

#### How are you starting localstack (e.g., `bin/localstack` command, arguments, or `docker-compose.yml`)

    docker run localstack/localstack

#### Flow
 - Create a SQS Queue
 - Create a SNS Topic
 - Configure a Subscription of the new Topic that sends to the SQS queue (specify a raw delivery at true)
 - Publish a message to SNS Topic with attribute { DataType: "string", StringValue: "anything"}
 - Attributes are no more StringValue but just value. 

(can't provide more, I have issues with my awslocal, I got this issue with the PHP client initially)

### Environment

```markdown
- OS: Docker Desktop for mac
- LocalStack: 1.4
```


### Anything else?

The AWS SNS official documentation : https://docs.aws.amazon.com/sns/latest/api/API_MessageAttributeValue.html


MR for fix is coming
SubscriptionArn=http_subscription_arn
        )
        assert subscription_attributes["Attributes"]["PendingConfirmation"] == "false"
        server.stop()
        wait_for_port_closed(server.port)
        message = "test_dlq_external_http_endpoint"
        aws_client.sns.publish(TopicArn=topic_arn, Message=message)
        response = aws_client.sqs.receive_message(QueueUrl=dlq_url, WaitTimeSeconds=3)
        assert (
            len(response["Messages"]) == 1
        ), f"invalid number of messages in DLQ response {response}"
        if raw_message_delivery:
            assert response["Messages"][0]["Body"] == message
        else:
            received_message = json.loads(response["Messages"][0]["Body"])
            assert received_message["Type"] == "Notification"
            assert received_message["Message"] == message
        receipt_handle = response["Messages"][0]["ReceiptHandle"]
        aws_client.sqs.delete_message(QueueUrl=dlq_url, ReceiptHandle=receipt_handle)
        expected_unsubscribe_url = (
            f"{service_url}/?Action=Unsubscribe&SubscriptionArn={http_subscription_arn}"
        )
        unsub_request = requests.get(expected_unsubscribe_url)
        unsubscribe_confirmation = xmltodict.parse(unsub_request.content)
        assert "UnsubscribeResponse" in unsubscribe_confirmation
        response = aws_client.sqs.receive_message(QueueUrl=dlq_url, WaitTimeSeconds=2)
        # A
        assert "Messages" not in response
    @pytest.mark.aws_validated
    def test_publish_too_long_message(self, sns_create_topic, snapshot, aws_client):