Update CHANGELOG.md

Author: jbern0rd

CHANGELOG.md

@@ -7,6 +7,7 @@ All notable changes to this project will be documented in this file.
 ### New Features
 - Enable Prometheus actuator. (#79)
 - Rework `QueueService` with a thread pool based on a `PriorityBlockingQueue`. (#84)
+- Do not use `broker` to match ordes on chain. (#87)
 ### Bug Fixes
 - Fix security rule to access Swagger API. (#79)
 ### Dependency Upgrades