update socket.io version

Author: xerbalind

content/cammie.erb

@@ -4,7 +4,7 @@ title: Cammie
 ---
 <% content_for :scripts do %>
 <script src="https://code.jquery.com/jquery-3.0.0.min.js" charset="utf-8"></script>
-<script src="//cdnjs.cloudflare.com/ajax/libs/socket.io/2.2.0/socket.io.js" integrity="sha256-yr4fRk/GU1ehYJPAs8P4JlTgu0Hdsp4ZKrx8bDEDC3I=" crossorigin="anonymous"></script>
+<script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/4.7.2/socket.io.js" integrity="sha256-ohm5bQuo4yRByZrO3JFkHnUxob0EsucKvzTA4ZUQ87g=" crossorigin="anonymous"></script>
 <script type="text/javascript" charset="utf-8">
 var socket = io("https://kelder.zeus.ugent.be");
 socket.on('replymessage', function(obj) {