Update changelog for v2.3.5

Author: github-actions[bot]

CHANGELOG.md

@@ -1,6 +1,6 @@
 # CodeQL Action Changelog
 
-## [UNRELEASED]
+## 2.3.5 - 25 May 2023
 
 - Allow invalid URIs to be used as values to `artifactLocation.uri` properties. This reverses a change from [#1668](https://github.com/github/codeql-action/pull/1668) that inadvertently led to stricter validation of some URI values. [#1705](https://github.com/github/codeql-action/pull/1705)