Update changelog for v3.29.2

Author: github-actions[bot]

CHANGELOG.md

@@ -2,7 +2,7 @@
 
 See the [releases page](https://github.com/github/codeql-action/releases) for the relevant changes to the CodeQL CLI and language packs.
 
-## [UNRELEASED]
+## 3.29.2 - 30 Jun 2025
 
 - Experimental: When the `quality-queries` input for the `init` action is provided with an argument, separate `.quality.sarif` files are produced and uploaded for each language with the results of the specified queries. Do not use this in production as it is part of an internal experiment and subject to change at any time. [#2376](https://github.com/github/codeql-action/pull/2935)