Updated changelog

CHANGELOG.md

@@ -28,6 +28,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 * Removed duplicated entries from generated `.dep` files
 * Removed `dev` targets from modules that function in "local source mode"
 * Fixed issue where `.hpp` files were not installed correctly with `KEEP_HEADER_SUBDIRS`
+* Missing `REQUIRED` dependencies now cause the build to fail instead of providing a warning
 
 ### Other changes
 * Removed `<module>_TEMPLATES` in favour of `<module>_DB`