Update changelog for next dev iteration

Add unreleased entry and link to its commit history.

Signed-off-by: thc202 <thc202@gmail.com>

Author: thc202

CHANGELOG.md

@@ -3,6 +3,8 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
+## [Unreleased]
+
 ## [2.0.0-rc.6] - 2025-01-20
 ### Added
 - Add the API of the following add-on:
@@ -119,6 +121,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 ## 0.3.0 - 2017-12-04
 
 
+[Unreleased]: https://github.com/zaproxy/zap-api-nodejs/compare/v2.0.0-rc.6...HEAD
 [2.0.0-rc.6]: https://github.com/zaproxy/zap-api-nodejs/compare/v2.0.0-rc.5...v2.0.0-rc.6
 [2.0.0-rc.5]: https://github.com/zaproxy/zap-api-nodejs/compare/v2.0.0-rc.4...v2.0.0-rc.5
 [2.0.0-rc.4]: https://github.com/zaproxy/zap-api-nodejs/compare/v2.0.0-rc.3...v2.0.0-rc.4