Disable WordPress Updates

wp-config.php

if (ENVIRONMENT != 'development') {
    define('AUTOMATIC_UPDATER_DISABLED', true); // Disable Automatic Updates
    define('WP_AUTO_UPDATE_CORE', false);       // Disable WordPress Core Automatic Updates
    define('DISALLOW_FILE_EDIT', true);         // Disable the Plugin and Theme Editor
    define('DISALLOW_FILE_MODS', true);         // Disable Wordpress, Plugin and Theme Installation and Updates
}