### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

I would like to request extending `sns_listener` with an ability to understand `email-json` next to `email` protocol.

### 🧑‍💻 Implementation

1. check if protocol is `email` or `email-json`
2. for email json interpret body/message as json

### Anything else?

_No response_
LOG.info(
                "Received error on sending SNS message, putting to DLQ (if configured): %s", exc
            )
            store_delivery_log(subscriber, False, message, message_id)
            sns_error_to_dead_letter_queue(subscriber["SubscriptionArn"], req_data, str(exc))
        return
    elif subscriber["Protocol"] == "application":
        try:
            sns_client = aws_stack.connect_to_service("sns")
            sns_client.publish(TargetArn=subscriber["Endpoint"], Message=message)
            store_delivery_log(subscriber, True, message, message_id)
        except Exception as exc:
            LOG.warning(
                "Unable to forward SNS message to SNS platform app: %s %s",
                exc,
                traceback.format_exc(),
            )
            store_delivery_log(subscriber, False, message, message_id)
            sns_error_to_dead_letter_queue(subscriber["SubscriptionArn"], req_data, str(exc))
        return
    elif subscriber["Protocol"] == "email":
        ses_client = aws_stack.connect_to_service("ses")
        if subscriber.get("Endpoint"):
            ses_client.verify_email_address(EmailAddress=subscriber.get("Endpoint"))
            ses_client.verify_email_address(EmailAddress="admin@localstack.com")
            ses_client.send_email(
                Source="admin@localstack.com",
                Message={
                    "Body": {"Text": {"Data": message}},
                    "Subject": {"Data": "SNS-Subscriber-Endpoint"},