Bump WordPress version number

readme.txt

@@ -3,8 +3,8 @@ Contributors: OneSignal
 Donate link: https://onesignal.com
 Tags: push notification, push notifications, desktop notifications, mobile notifications, chrome push, android, android notification, android notifications, android push, desktop notification, firefox, firefox push, mobile, mobile notification, notification, notifications, notify, onesignal, push, push messages, safari, safari push, web push, chrome
 Requires at least: 3.8
-Tested up to: 6.2
 Stable tag: 2.4.2
+Tested up to: 6.5
 License: GPLv2 or later
 License URI: http://www.gnu.org/licenses/gpl-2.0.html