Update to jQuery 3.6.1 (#6491)

This commit updates FusionPBX to use jQuery 3.6.1 and also adds a fallback to the other variable name for offhook autodial on the HT802.

app/contacts/contact_timer.php

@@ -300,7 +300,7 @@
 
 	</style>
 
-	<script language='JavaScript' type='text/javascript' src='<?php echo PROJECT_PATH; ?>/resources/jquery/jquery-3.4.1.min.js'></script>
+	<script language='JavaScript' type='text/javascript' src='<?php echo PROJECT_PATH; ?>/resources/jquery/jquery-3.6.1.min.js'></script>
 	<script src='https://code.jquery.com/jquery-migrate-3.1.0.js'></script>
 	<script type="text/javascript">
 		$(document).ready(function(){
@@ -362,4 +362,4 @@
 	</form>
 	<?php if ($timer_state == 'stopped') { ?><script>$('#timer_description').trigger('focus');</script><?php } ?>
 </body>
-</html>
+</html>