### 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
snapshot.match("messages", messages)
    @pytest.mark.only_localstack
    def test_redrive_policy_http_subscription(
        self, sns_create_topic, sqs_create_queue, sqs_queue_arn, sns_subscription, aws_client
    ):
        dlq_name = f"dlq-{short_uid()}"
        dlq_url = sqs_create_queue(QueueName=dlq_name)
        dlq_arn = sqs_queue_arn(dlq_url)
        topic_arn = sns_create_topic()["TopicArn"]
        # c
        with HTTPServer() as server:
            server.expect_request("/subscription").respond_with_data(b"", 200)
            http_endpoint = server.url_for("/subscription")
            wait_for_port_open(server.port)
            subscription = sns_subscription(
                TopicArn=topic_arn, Protocol="http", Endpoint=http_endpoint
            )
            aws_client.sns.set_subscription_attributes(
                SubscriptionArn=subscription["SubscriptionArn"],
                AttributeName="RedrivePolicy",
                AttributeValue=json.dumps({"deadLetterTargetArn": dlq_arn}),
            )
            # w
            poll_condition(lambda: len(server.log) >= 1, timeout=10)
            request, _ = server.log[0]
            event = request.get_json(force=True)
            assert request.path.endswith("/subscription")
            assert event["Type"] == "SubscriptionConfirmation"
            assert event["TopicArn"] == topic_arn
            aws_client.sns.confirm_subscription(TopicArn=topic_arn, Token=event["Token"])