Update changelog with changes from v1.2.0

Author: newrelic-coreint-bot

CHANGELOG.md

@@ -7,7 +7,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 Unreleased section should follow [Release Toolkit](https://github.com/newrelic/release-toolkit#render-markdown-and-update-markdown)
 ## Unreleased
 
-### Enhancement
+## v1.2.0 - 2024-08-09
+
+### 🚀 Enhancements
 - Fix markdown validator to match entry-type
 
 ## v1.1.0 - 2024-04-09