Update CHANGELOG.md

Author: morgante

CHANGELOG.md

@@ -257,7 +257,8 @@ In either case, upgrading to module version `v1.0.0` will trigger a recreation o
 
 * Initial release of module.
 
-[Unreleased]: https://github.com/terraform-google-modules/terraform-google-kubernetes-engine/compare/v6.0.1...HEAD
+[Unreleased]: https://github.com/terraform-google-modules/terraform-google-kubernetes-engine/compare/v6.1.0...HEAD
+[v6.1.0]: https://github.com/terraform-google-modules/terraform-google-kubernetes-engine/compare/v6.0.1...v6.1.0
 [v6.0.1]: https://github.com/terraform-google-modules/terraform-google-kubernetes-engine/compare/v6.0.0...v6.0.1
 [v6.0.0]: https://github.com/terraform-google-modules/terraform-google-kubernetes-engine/compare/v5.2.0...v6.0.0
 [v5.2.0]: https://github.com/terraform-google-modules/terraform-google-kubernetes-engine/compare/v5.1.1...v5.2.0