chore: Update changelog

Author: NickLarsenNZ

CHANGELOG.md

@@ -25,11 +25,16 @@
 - Use `json` file extension for log files ([#647]).
 - Fix a bug where changes to ConfigMaps that are referenced in the HbaseCluster spec didn't trigger a reconciliation ([#645]).
 
+### Removed
+
+- test: ZooKeeper 3.9.2 removed ([#654]).
+
 [#640]: https://github.com/stackabletech/hbase-operator/pull/640
 [#645]: https://github.com/stackabletech/hbase-operator/pull/645
 [#647]: https://github.com/stackabletech/hbase-operator/pull/647
 [#648]: https://github.com/stackabletech/hbase-operator/pull/648
 [#652]: https://github.com/stackabletech/hbase-operator/pull/652
+[#654]: https://github.com/stackabletech/hbase-operator/pull/654
 
 ## [25.3.0] - 2025-03-21