chore: Update changelog

Author: NickLarsenNZ

CHANGELOG.md

@@ -22,6 +22,7 @@ All notable changes to this project will be documented in this file.
 - BREAKING: Inject the vector aggregator address into the vector config using the env var `VECTOR_AGGREGATOR_ADDRESS` instead
     of having the operator write it to the vector config ([#671]).
 - test: Bump to Vector `0.46.1` ([#677]).
+- Use versioned common structs ([#684]).
 
 ### Fixed
 
@@ -39,6 +40,7 @@ All notable changes to this project will be documented in this file.
 [#672]: https://github.com/stackabletech/hdfs-operator/pull/672
 [#675]: https://github.com/stackabletech/hdfs-operator/pull/675
 [#677]: https://github.com/stackabletech/hdfs-operator/pull/677
+[#684]: https://github.com/stackabletech/hdfs-operator/pull/684
 
 ## [25.3.0] - 2025-03-21