declare compatibility with WordPress 6.9

Author: stklcode

README.md

@@ -9,7 +9,7 @@
 * Contributors:      stklcode
 * Tags:              liveticker, feed, rss
 * Requires at least: 5.0
-* Tested up to:      6.8
+* Tested up to:      6.9
 * Requires PHP:      7.2
 * Stable tag:        1.3.1
 * License:           GPLv2 or later