Finalized CHANGELOG for 1.3.0

Author: ramonsmits

CHANGELOG.md

@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [1.3.0] - ?
+## [1.3.0] - 2025-06-16
 
 - 🐛 List started at 11, accidentally added 11 instead of 1
 - ✨ Migrated from NServiceBus.Raw to NServiceBus 9.x transport seam