chore: adapted changelog

Author: maltesander

CHANGELOG.md

@@ -18,12 +18,15 @@ All notable changes to this project will be documented in this file.
 - Bump `stackable-operator` to 0.111.1 ([#777], [#778]).
 - Internal operator refactoring: introduce dereference() and validate() steps in the reconciler ([#783]).
 - test: Bump vector-aggregator to 0.55.0, replace /graphql call with gRPC call ([#787]).
+- BREAKING: Removed product-config machinery. This is a breaking change in terms of configuration.
+  Users relying on the product-config `properties.yaml` file have to set these properties via the CRD ([#790]).
 
 [#770]: https://github.com/stackabletech/hdfs-operator/pull/770
 [#777]: https://github.com/stackabletech/hdfs-operator/pull/777
 [#778]: https://github.com/stackabletech/hdfs-operator/pull/778
 [#783]: https://github.com/stackabletech/hdfs-operator/pull/783
 [#787]: https://github.com/stackabletech/hdfs-operator/pull/787
+[#790]: https://github.com/stackabletech/hdfs-operator/pull/790
 
 ## [26.3.0] - 2026-03-16