### 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
endpoint_url = "https://sns.us-east-1.amazonaws.com"
        else:
            endpoint_url = config.get_edge_url()
        response = client.post(
            endpoint_url,
            params={
                "Action": "",
                "Version": "2010-03-31",
                "TopicArn": topic_arn,
                "Message": message,
            },
        )
        json_response = xmltodict.parse(response.content)
        json_response["Response"].pop("@xmlns")
        json_response["Response"]["ResponseMetadata"][
            "HTTPStatusCode"
        ] = response.status_code
        json_response["Response"]["ResponseMetadata"]["HTTPHeaders"] = dict(response.headers)
        snapshot.match("post-request", json_response)
        assert response.status_code == 200
        assert b"<Response" in response.content
        rs = aws_client.sqs.receive_message(
            QueueUrl=queue_url, VisibilityTimeout=0, WaitTimeSeconds=5
        )
        snapshot.match("messages", rs)
        msg_body = json.loads(rs["Messages"][0]["Body"])
        assert msg_body["TopicArn"] == topic_arn
        assert msg_body["Message"] == message
    @pytest.mark.only_localstack
    def test_multiple_subscriptions_http_endpoint(