### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

When you publish a message to SNS without a *body* (e.g. only attributes) it succeeds.

### Expected Behavior

Trying to publish a message without a *body* should fail (at least it does when trying to do this in AWS)

### How are you starting LocalStack?

Custom (please describe below)

### Steps To Reproduce

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

using Java testcontainers...

#### Client commands (e.g., AWS SDK code snippet, or sequence of "awslocal" commands)

```bash
#!/bin/sh
 
queue_arn=$(awslocal sqs create-queue --queue-name $QUEUE_NAME --output text)
echo "Queue ARN: $queue_arn"

topic_arn=$(awslocal sns create-topic --name $TOPIC_NAME --output text)
echo "Topic ARN: $topic_arn"

subscription_arn=$(awslocal sns subscribe \
    --attributes RawMessageDelivery=true \
    --topic-arn "$topic_arn" \
    --protocol sqs \
    --notification-endpoint "$queue_arn" \
    --output text)
echo "Subscription ARN: $subscription_arn" 
```


### Environment

```markdown
- OS: OSX 11.5.2
- LocalStack: 0.13.0
- Docker Desktop: v20.10.8
```


### Anything else?

_No response_
result = self.sqs_client.receive_message(
                QueueUrl=self.dlq_url, MessageAttributeNames=["All"]
            )
            self.assertGreater(len(result["Messages"]), 0)
            self.assertEqual(
                json.loads(json.loads(result["Messages"][0]["Body"])["Message"][0])["message"],
                "test_redrive_policy",
            )
        retry(receive_dlq, retries=10, sleep=2)
    def test_publish_with_empty_subject(self):
        topic_arn = self.sns_client.create_topic(Name=TEST_TOPIC_NAME_2)["TopicArn"]
        # P
        rs = self.sns_client.publish(
            TopicArn=topic_arn, Message=json.dumps({"message": "test_publish"})
        )
        self.assertEqual(rs["ResponseMetadata"]["HTTPStatusCode"], 200)
        try:
            # P
            self.sns_client.publish(
                TopicArn=topic_arn,
                Subject="",
                Message=json.dumps({"message": "test_publish"}),
            )
            self.fail("This call should not be successful as the subject is empty")
        except ClientError as e:
            self.assertEqual(e.response["Error"]["Code"], "InvalidParameter")
        # c
        self.sns_client.delete_topic(TopicArn=topic_arn)
    def test_create_topic_test_arn(self):