Update tested version

cameronjonesweb · cameronjonesweb · commit 946ddf75f5ee · 2024-01-03T12:26:32.000+10:30
diff --git a/readme.md b/readme.md
@@ -8,7 +8,7 @@ Donate link: https://www.patreon.com/cameronjonesweb
 
 Requires at least: 4.6
 
-Tested up to: 6.3
+Tested up to: 6.4
 
 Requires PHP: 5.3
 
