Fix suggestions for: PHP Warning: The magic method Hybrid_Registry::__wakeup()

Hi @greenshady

In order to fix the following error in PHP 8.1:
PHP Warning: The magic method Hybrid_Registry::__wakeup() must have public visibility in wp-content/themes/stargazer/library/inc/class-registry.php on line 68

I changed the line 68 from:

	private function __wakeup() {
	}

to

	public function __wakeup() {
	}