update changelog for 6.4.1
@@ -6,7 +6,7 @@ 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).
-## Unreleased
+## [6.4.1] - 2021-08-24
### Fixed
- Sensu Go OSS can now be built on `darwin/arm64`.
