Update changelog in Apple News plugin readme

Comprehensive and detailed updates have been made to the readme file's changelog for the Apple News plugin. Several bugs were fixed, Node.js and npm versions were upgraded, and some valuable info regarding plugin usage with News Preview app was added.

readme.txt

@@ -47,7 +47,19 @@ Please visit our [wiki](https://github.com/alleyinteractive/apple-news/wiki) for
 == Changelog ==
 
 = 2.4.6 =
-* TODO DAMIAN: Add changelog for 2.4.6
+
+* Bugfix: #1057 - Resolved type error on Automation admin screen
+* Bugfix: #1056 - Resolved error fetching list of sections
+* Bugfix: #1055 - Moved async functions outside useEffect to avoid synchronous errors
+* Bugfix: #1051 - Updated npm dependencies to match WordPress
+* Bugfix: #1050 - Resolved uncaught promise error when saving automation rules
+* Bugfix: #1048 - Fix posting bug caused by invalid document name.
+* Bugfix: #1030 - Fixed render error with "publish-to-apple-news" plugin.
+* Bugfix: #1028 - Fixed inability to select checklist options in Post Apple News Options plugin.
+* Bugfix: #1018 - Fixed bug deleting automation rules which removed all page contents.
+* Bugfix: #1014 - Resolved invalid document exception while processing articles.
+* Enhancement: Upgraded to Node.js 20 and npm 10.
+* Enhancement: Added info for using plugin with News Preview app.
 
 = 2.4.5 =
 * Fixes regular expression for adding identifiers.