chore: updated pixijs from 6.1.2 to 6.5.9

src/client/index.html

@@ -11,7 +11,7 @@
 		<link rel="stylesheet" href="css/main.css">
 		<script>if (typeof module === 'object') {window.module = module; module = undefined;}</script>
 		<script src="js/system/addons.js"></script>
-		<script src="https://cdnjs.cloudflare.com/ajax/libs/pixi.js/6.1.2/browser/pixi.min.js"></script>
+		<script src="https://cdnjs.cloudflare.com/ajax/libs/pixi.js/6.5.9/browser/pixi.min.js"></script>
 		<script src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.6/require.min.js" data-main="js/app"></script>
 		<script>if (window.module) module = window.module;</script>
 		<link rel="icon" href="images/favicon.ico">