### 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
timeout=5,
        )
        unsub_request, _ = server.log[2]
        payload = unsub_request.get_json(force=True)
        assert payload["Type"] == "UnsubscribeConfirmation"
        assert unsub_request.headers["x-amz-sns-message-type"] == "UnsubscribeConfirmation"
        assert "Signature" in payload
        assert "SigningCertURL" in payload
        token = payload["Token"]
        assert payload["URL"] == (
            f"{service_url}/?" f"Action=ConfirmSubscription&TopicArn={topic_arn}&Token={token}"
        )
        snapshot.match("unsubscribe-request", payload)
    @pytest.mark.only_localstack
    @pytest.mark.parametrize("raw_message_delivery", [True, False])
    def test_dlq_external_http_endpoint(
        self,
        sns_create_topic,
        sqs_create_queue,
        sqs_queue_arn,
        sns_subscription,
        sns_create_http_endpoint,
        sns_create_s,
        sns_allow_topic_sqs_queue,
        raw_message_delivery,
        aws_client,
    ):
        # N
        topic_arn, http_subscription_arn, endpoint_url, server = sns_create_http_endpoint(
            raw_message_delivery