Merge pull request #564 from LedgerHQ/fbe/release_client_0.4.0

Update changelog of the python client for v0.4.0 release

client/CHANGELOG.md

@@ -5,6 +5,12 @@ 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).
 
+## [0.4.0] - 2024-04-03
+
+### Added
+
+- Changed `sync` functions of the client to not use an `async` syntax anymore
+
 ## [0.3.1] - 2024-03-12
 
 ### Fixed