Merge pull request #423 from Yoast/set-tested-up-to-wp-6.9

Sets the WordPress tested up to version to 6.9

Author: enricobattocchi

readme.txt

@@ -3,7 +3,7 @@ Contributors: 		yoast, lopo
 Donate link: 		https://yoast.com/wordpress/plugins/duplicate-post/
 Tags: 				duplicate post, copy, clone
 Requires at least: 	6.6
-Tested up to: 		6.8
+Tested up to: 		6.9
 Stable tag: 		4.5
 Requires PHP:		7.4
 License: 			GPLv2 or later