### Is there an existing issue for this?

- [X] I have searched the existing issues

### Current Behavior

I am running an SNS topic that publishes to a lambda function. The localstack code reads a type byte object from the lambda function invocation payload [here](https://github.com/localstack/localstack/blob/master/localstack/services/sns/publisher.py#L187) and then tries to dump the result into json [here](https://github.com/localstack/localstack/blob/master/localstack/services/sns/publisher.py#L863) which results in the following error:
```
sns_pub_0] l.services.sns.publisher   : Unable to run Lambda function on SNS message: Object of type bytes is not JSON serializable
```

### Expected Behavior

The payload bytes should be converted to a string before being dumped to json. The error should not be thrown.

### 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-compose up
(Using the standard docker-compose.yaml)

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

```
awslocal sns publish --message file://sns/message.json --topic-arn arn:aws:sns:us-east-1:000000000000:<topic_name>
```

### Environment

```markdown
- OS: macOS Ventura 13.2.1
- LocalStack: latest
```


### Anything else?

_No response_
if value >= operand:
                    return False
            elif operator == ">=":
                if value < operand:
                    return False
            elif operator == "<=":
                if value > operand:
                    return False
        return True
class PublishDispatcher:
    """
    The PublishDispatcher is responsible for dispatching the publishing of SNS messages asynchronously to worker
    threads via a `ThreadPoolExecutor`, depending on the SNS subscriber protocol and filter policy.
    """
    topic_notifiers = {
        "http": HttpTopicPublisher(),
        "https": HttpTopicPublisher(),
        "email": EmailTopicPublisher(),
        "email-json": EmailJsonTopicPublisher(),
        "sms": SmsTopicPublisher(),
        "sqs": SqsTopicPublisher(),
        "application": ApplicationTopicPublisher(),
        "lambda": LambdaTopicPublisher(),
        "firehose": FirehoseTopicPublisher(),
    }
    batch_topic_notifiers = {"sqs": SqsBatchTopicPublisher()}
    sms_notifier = SmsPhoneNumberPublisher()
    application_notifier = ApplicationEndpointPublisher()
    subscription_filter = SubscriptionFilter()
    def __init__(self, num_thread: int = 10):