[internal #1860244] upgrading JQuery to version 3.5.1

Signed-off-by: ekistam <tamas.levente.kiss@ericsson.com>

htdocs/index.html

@@ -22,7 +22,7 @@ http:www.eclipse.org/legal/epl-v10.html                           -->
         <script src="Utils/Polyfill.js"></script>
         <script src="Utils/Compat.js"></script>
         <!-- Polyfill the Zeroth, for the old browsers. -->
-        <script src="Libs/JQuery/jquery-3.4.0.min.js"></script>
+        <script src="Libs/JQuery/jquery-3.5.1.min.js"></script>
         <script src="Libs/JQuery/jquery.svg.js"></script>
         <script src="Libs/jsTree/jstree.min.js"></script>
         <script src="Libs/JQueryUI/jquery-ui.js "></script>