Update changelog

CHANGELOG.md

@@ -5,6 +5,13 @@ 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
+
+### Added
+
+- Added an expiration date to the access to share the portfolio
+- Added the date of the last usage to the access to share the portfolio
+
 ## 3.61.0 - 2026-08-25
 
 ### Changed