Update changelog

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).
 
+## Unreleased
+
+### Fixed
+
+- Loosened the validation in the activities import (expects values greater than or equal to 0 for `fee`, `quantity` and `unitPrice`)
+
 ## 2.17.0 - 2023-11-02
 
 ### Added