Add new role in author dropdown menu

PHP
function filter_authors( $args ) {
  if ( isset( $args['who'])) {
    $args['role__in'] = ['author', 'editor', 'administrator', 'innews_admin'];
		unset( $args['who']);
	}
	return $args;
}
add_action('wp_dropdown_users_args', 'filter_authors');