updating changelog to have 2.1.0 release information (#158)

Author: Jday7879

CHANGELOG.md

@@ -5,7 +5,17 @@ All notable changes to this project will be documented in this file, grouped by
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased] - Up to date with 4th December 2024
+## [Unreleased] -
+
+### Added
+
+### Fixed
+
+### Changed
+
+### Removed
+
+## [2.1.0] - 2nd June 2025
 
 ### Added
 
@@ -68,4 +78,5 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 
 [unreleased]: https://github.com/best-practice-and-impact/govcookiecutter
+[2.1.0]: https://github.com/best-practice-and-impact/govcookiecutter/tree/2.1.0
 [2.0.0]: https://github.com/best-practice-and-impact/govcookiecutter/tree/2.0.0