Update changelog for v2.20.3

github-actions[bot] · github-actions[bot] · commit d0206e8c49be · 2023-07-06T13:14:11.000Z
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # CodeQL Action Changelog
 
-## [UNRELEASED]
+## 2.20.3 - 06 Jul 2023
 
 - Update default CodeQL bundle version to 2.13.5. [#1743](https://github.com/github/codeql-action/pull/1743)
 
