Add changelog entry

CHANGELOG.md

@@ -2,7 +2,13 @@
 
 All changes that impact users of this module are documented in this file, in the [Common Changelog](https://common-changelog.org) format with some additional specifications defined in the CONTRIBUTING file. This codebase adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+## Unreleased [minor]
+
+_Full changeset and discussions: [#1031](https://github.com/OpenTermsArchive/engine/pull/1031)._
+
+### Added
+
+- Add `terms` attribute to `/services` API response, containing declared term types for each service
 
 ## 0.32.1 - 2023-10-18