chore: prepare next version

Signed-off-by: Pierre-Yves Lapersonne <pierreyves.lapersonne@orange.com>

Author: pylapp

CHANGELOG.md

@@ -4,6 +4,8 @@ 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](https://github.com/Orange-OpenSource/ouds-ios/compare/0.19.0...develop)
+
 ## [0.19.0](https://github.com/Orange-OpenSource/ouds-ios/compare/0.18.0...0.19.0) - 2025-09-24
 
 ### Added