### 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_
subscriber["SubscriptionArn"],
            )
            response = lambda_api.process_sns_notification(
                subscriber["Endpoint"],
                topic_arn,
                subscriber["SubscriptionArn"],
                message,
                message_id,
                message_attributes,
                unsubscribe_url,
                subject=req_data.get("Subject", [None])[0],
            )
            if response is not None:
                delivery = {
                    "statusCode": response.status_code,
                    "providerResponse": response.get_data(),
                }
                store_delivery_log(subscriber, True, message, message_id, delivery)
            if isinstance(response, Response):
                response.raise_for_status()
            elif isinstance(response, FlaskResponse):
                if response.status_code >= 400:
                    raise Exception(
                        "Error response (code %s): %s" % (response.status_code, response.data)
                    )
        except Exception as exc:
            LOG.info(
                "Unable to run Lambda function on SNS message: %s %s", exc, traceback.format_exc()
            )
            store_delivery_log(subscriber, False, message, message_id)