message: mention odata errors in changelog
diff: @@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
  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
  +
  +### Changed
  +
  +- Error responses of built-in endpoints are now JSON and follow the OData schema (#1919).
  +
  ## [0.16.0]
  ### Added
  