### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

Sending a message with body:
`"&quot;&quot;"`
is received on the consumer side with body:
`""""`

### Expected Behavior

Sending a message with body:
"&quot;&quot;"
is received on the consumer side with body:
"&quot;&quot;"

### 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`)

Running localstack in docker desktop on Mac using helm chart

https://localstack.github.io/helm-charts
version 0.3.7
Image version: 0.14.3

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



### Environment

```markdown
- OS: macOS Monterey
- LocalStack: 0.14.3
```


### Anything else?

_No response_
dl_queue_url = sqs_create_queue()
        url_parts = dl_queue_url.split("/")
        region = get_region()
        dl_target_arn = "arn:aws:sqs:{}:{}:{}".format(
            region, url_parts[len(url_parts) - 2], url_parts[-1]
        )
        conf = {"deadLetterTargetArn": dl_target_arn, "maxReceiveCount": 50}
        attributes = {"RedrivePolicy": json.dumps(conf)}
        queue_url_1 = sqs_create_queue(Attributes=attributes)
        queue_url_2 = sqs_create_queue(Attributes=attributes)
        assert queue_url_1
        assert queue_url_2
        source_urls = aws_client.sqs.list_dead_letter_source_queues(QueueUrl=dl_queue_url)
        assert len(source_urls) == 2
        assert queue_url_1 in source_urls["queueUrls"]
        assert queue_url_2 in source_urls["queueUrls"]
    @pytest.mark.aws_validated
    def test_dead_letter_queue_with_fifo_and_content_based_deduplication(