Update dependency p5.js to v1.11.1

Author: renovate[bot]

public/index.html

@@ -6,8 +6,8 @@
   <title>Websockets drawing app</title>
   <link rel="stylesheet" type="text/css" href="styles.css" />
   <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.5.0/socket.io.js"></script>
-  <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.3.1/p5.min.js"></script>
-  <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.3.1/addons/p5.sound.min.js"></script>
+  <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.11.1/p5.min.js"></script>
+  <script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/1.11.1/addons/p5.sound.min.js"></script>
   <script type="text/javascript" src="sketch.js"></script>
 </head>