Fix json schema handling for enums in the changelog

Author: grongierisc

CHANGELOG.md

@@ -5,6 +5,10 @@ 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).
 
+## Unreleased
+### Fixed
+- Fix json schema handling enums.
+
 ## [3.6.0] - 2026-03-30
 ### Added
 - `iop` command line has a new full remote controle feature, allowing to start, stop, restart, update, test and log productions on a remote IRIS instance through its REST API