Update test to use qunit 2.6.2

Author: OlegKi

tests/fillingTest.htm

@@ -9,7 +9,7 @@
 	<link rel="stylesheet" href="https://code.jquery.com/ui/1.12.1/themes/redmond/jquery-ui.min.css">
 	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.7.0/css/font-awesome.min.css">
     <link rel="stylesheet" href="https://rawgit.com/free-jqgrid/jqGrid/master/css/ui.jqgrid.css"/>
-    <link rel="stylesheet" href="https://code.jquery.com/qunit/qunit-2.6.1.css">
+    <link rel="stylesheet" href="https://code.jquery.com/qunit/qunit-2.6.2.css">
     <style>
         html, body { font-size: 75%; }
         .ui-jqgrid .ui-jqgrid-bdiv .myAltRowClass {
@@ -24,7 +24,7 @@
         $.jgrid.no_legacy_api = true;
     </script>
     <script src="https://rawgit.com/free-jqgrid/jqGrid/master/js/jquery.jqgrid.src.js"></script>
-    <script src="https://code.jquery.com/qunit/qunit-2.6.1.js"></script>
+    <script src="https://code.jquery.com/qunit/qunit-2.6.2.js"></script>
     <script>
     //<![CDATA[
     /*global $ */