Bump changelog for v6.25.0

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [v6.25.0](https://github.com/buildkite/elastic-ci-stack-for-aws/tree/v6.25.0) (2024-08-30)
+[Full Changelog](https://github.com/buildkite/elastic-ci-stack-for-aws/compare/v6.24.0...v6.25.0)
+
+### Changed
+- Bump agent to v3.79.0 [#1362](https://github.com/buildkite/elastic-ci-stack-for-aws/pull/1362) (@wolfeidau)
+
 ## [v6.24.0](https://github.com/buildkite/elastic-ci-stack-for-aws/tree/v6.24.0) (2024-08-21)
 [Full Changelog](https://github.com/buildkite/elastic-ci-stack-for-aws/compare/v6.23.0...v6.24.0)