docs: updated changelog with latest changes for matomo support

CHANGELOG.md

@@ -5,6 +5,15 @@ 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 Matomo support to enable tracking and analytics. The following configuration variables were introduced:
+  - `ckanext.odsh.matomo_enabled` (boolean): Enables or disables Matomo tracking. Default is `False`.
+  - `ckanext.odsh.matomo_base_uri` (string): Specifies the base URI of the Matomo tracker. Default is `None`.
+  - `ckanext.odsh.matomo_site_id` (string): Specifies the Matomo site ID for the instance. Default is `None`.
+  
 ## [2.4.6] - 2025-01-09
 
 ### Added