Mentions "Create PR" button changes in the CHANGELOG

(#4332, #4347)

Author: sergeibbb

CHANGELOG.md

@@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 - Automatically stashes (and pops) uncommitted changes on Pull ([#4296](https://github.com/gitkraken/vscode-gitlens/issues/4296))
 - Removes the option to associate an issue from cards in the RECENT section of the _Home_ view ([#4333](https://github.com/gitkraken/vscode-gitlens/issues/4333))
+- Combines the "Create Pull Request" and "Create with AI" buttons into a split button ([#4330](https://github.com/gitkraken/vscode-gitlens/issues/4330))
 
 ### Fixed