Change who receives Solid Security notifications based on environment type

solid-security.php

<?php
/**
 * Plugin Name: Solid Security configuration
 * Plugin URI:  https://joshuafredrickson.com
 * Version:     1.0.0
 * Description: Filter notifications in non-production environments.
 * Author:      Kinetic
 * Author URI:  https://joshuafredrickson.com
 * License:     GNU General Public License v2
 * License URI: http://www.gnu.org/licenses/gpl-2.0.html
 */

/**
 * Change who receives notifications in non-production environments.
 */
add_filter('itsec_notification_email_recipients', function (array $emails): array {
    if (wp_get_environment_type() === 'production') {
        return $emails;
    }

    return ['newemail@example.org'];
});