Release v1.4.0 (#309)

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [1.4.0] - 2024-05-17
+
 ### Changed
 
 - Update `controller-runtime` to `v0.16.3` to match other packages.
@@ -203,7 +205,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Add initial version that implements InstallApps for use in apptestctl and
 Go integration tests.
 
-[Unreleased]: https://github.com/giantswarm/apptest/compare/v1.3.1...HEAD
+[Unreleased]: https://github.com/giantswarm/apptest/compare/v1.4.0...HEAD
+[1.4.0]: https://github.com/giantswarm/apptest/compare/v1.3.1...v1.4.0
 [1.3.1]: https://github.com/giantswarm/apptest/compare/v1.3.0...v1.3.1
 [1.3.0]: https://github.com/giantswarm/apptest/compare/v1.2.1...v1.3.0
 [1.2.1]: https://github.com/giantswarm/apptest/compare/v1.2.0...v1.2.1