Update readme.txt for 1.3

Author: jdevalk

readme.txt

@@ -2,7 +2,7 @@
 Contributors: joostdevalk
 Tags: options, database, cleanup
 Requires at least: 6.6
-Tested up to: 6.6
+Tested up to: 6.7
 Requires PHP: 7.4
 Stable tag: 1.3
 License: GPL3+
@@ -54,6 +54,10 @@ Please do a pull request via GitHub on [this file](https://github.com/Emilia-Cap
 
 == Changelog ==
 
+= 1.3 =
+
+* Make plugin work with the latest autoload changes.
+
 = 1.2.1 =
 
 * Fix error in `known-plugins.json`.