Add changelog note

github-actions[bot] · github-actions[bot] · commit db812c1ae639 · 2025-12-11T15:46:24.000Z
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -4,7 +4,7 @@ See the [releases page](https://github.com/github/codeql-action/releases) for th
 
 ## [UNRELEASED]
 
-No user facing changes.
+- Update default CodeQL bundle version to 2.23.8. [#3354](https://github.com/github/codeql-action/pull/3354)
 
 ## 4.31.7 - 05 Dec 2025
 
