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 ([#844]).
 - test: Bump to Vector `0.46.1` ([#855]).
+- Use versioned common structs ([#861]).
 
 ### Fixed
 
@@ -41,6 +42,7 @@ All notable changes to this project will be documented in this file.
 [#853]: https://github.com/stackabletech/kafka-operator/pull/853
 [#855]: https://github.com/stackabletech/kafka-operator/pull/855
 [#860]: https://github.com/stackabletech/kafka-operator/pull/860
+[#861]: https://github.com/stackabletech/kafka-operator/pull/861
 
 ## [25.3.0] - 2025-03-21