### 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_
self, context: RequestContext, resource_arn: AmazonResourceName, tags: TagList
    ) -> TagResourceResponse:
        
        
        unique_tag_keys = {tag["Key"] for tag in tags}
        if len(unique_tag_keys) < len(tags):
            raise InvalidParameterException("Invalid parameter: Duplicated keys are not allowed.")
        call_moto(context)
        store = self.get_store()
        existing_tags = store.sns_tags.get(resource_arn, [])
        def existing_tag_index(item):
            for idx, tag in enumerate(existing_tags):
                if item["Key"] == tag["Key"]:
                    return idx
            return None
        for item in tags:
            existing_index = existing_tag_index(item)
            if existing_index is None:
                existing_tags.append(item)
            else:
                existing_tags[existing_index] = item
        store.sns_tags[resource_arn] = existing_tags
        return TagResourceResponse()
    def delete_topic(self, context: RequestContext, topic_arn: topicARN) -> None:
        call_moto(context)
        store = self.get_store()
        store.sns_subscriptions.pop(topic_arn, None)
        store.sns_tags.pop(topic_arn, None)
    def create_topic(