Merge pull request #4966 from sensu/update-changelog-6.9.2

update changelog for 6.9.2 release

Author: gd8

CHANGELOG-6.md

@@ -5,7 +5,7 @@ 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]
+## [6.9.2] - 2023-03-08
 
 ### Added
 - Added GraphQL validator for query node depth