### 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
assert response["SubscriptionArn"] == sub_1["SubscriptionArn"]
            # a
            sub_1_attrs = aws_client.sns.get_subscription_attributes(
                SubscriptionArn=sub_1["SubscriptionArn"]
            )
            assert sub_1_attrs["Attributes"]["PendingConfirmation"] == "false"
            # a
            sub_2_attrs = aws_client.sns.get_subscription_attributes(
                SubscriptionArn=sub_2["SubscriptionArn"]
            )
            assert sub_2_attrs["Attributes"]["PendingConfirmation"] == "true"
        finally:
            subscription_list = aws_client.sns.list_subscriptions_by_topic(TopicArn=topic_arn)
            for subscription in subscription_list["Subscriptions"]:
                aws_client.sns.unsubscribe(SubscriptionArn=subscription["SubscriptionArn"])
            for server in servers:
                server.stop()
    @pytest.mark.aws_validated
    @pytest.mark.skip_snapshot_verify(paths=["$..Attributes.SubscriptionPrincipal"])
    def test_subscribe_sms_endpoint(self, sns_create_topic, sns_subscription, snapshot, aws_client):
        phone_number = "+123123123"
        topic_arn = sns_create_topic()["TopicArn"]
        response = sns_subscription(TopicArn=topic_arn, Protocol="sms", Endpoint=phone_number)
        snapshot.match("subscribe-sms-endpoint", response)
        sub_attrs = aws_client.sns.get_subscription_attributes(
            SubscriptionArn=response["SubscriptionArn"]
        )
        snapshot.match("subscribe-sms-attrs", sub_attrs)
    @pytest.mark.only_localstack
    def test_publish_sms_endpoint(self, sns_create_topic, sns_subscription, aws_client):