Fix: Update tested up to version in readme and main plugin file to 6.9

Author: krugazul

readme.txt

@@ -3,7 +3,7 @@ Contributors: lightspeedwp, wetudev
 Plugin URI: https://touroperator.solutions/tour-operator-wordpress-plugin/
 Tags: tour operator, travel, itinerary, tours, destinations, accommodations, tourism
 Requires at least: 6.7
-Tested up to: 6.8
+Tested up to: 6.9
 Requires PHP: 8.0
 Stable tag: 2.1.0
 License: GPLv3 or later

tour-operator.php

@@ -8,7 +8,7 @@
  * Author URI:        https://lightspeedwp.agency/
  * Version:           2.1.0
  * Requires at least: 6.7
- * Tested up to:      6.8
+ * Tested up to:      6.9
  * Requires PHP:      8.0
  * License:           GPLv3 or later
  * License URI:       https://www.gnu.org/licenses/gpl-3.0.html