AMQ-7349 - Update some javascript libraries

(cherry picked from commit 23b21105e8bd97db250f2df0d5a3aa328e9083b5)

assembly/src/release/examples/mqtt/websocket/index.html

@@ -113,7 +113,7 @@
     </div>
 
     <!-- Scripts placed at the end of the document so the pages load faster -->
-    <script src='js/jquery-1.7.2.min.js'></script>
+    <script src='js/jquery-3.4.1.min.js'></script>
     <script src="js/mqttws31.js"></script>
     <script>//<![CDATA[
 $(document).ready(function(){

assembly/src/release/examples/stomp/websocket/index.html

@@ -101,7 +101,7 @@
     </div>
 
     <!-- Scripts placed at the end of the document so the pages load faster -->
-    <script src='js/jquery-1.7.2.min.js'></script>
+    <script src='js/jquery-3.4.1.min.js'></script>
     <script src="js/stomp.js"></script>
     <script>//<![CDATA[
     $(document).ready(function() {