chore: Update changelog

Author: NickLarsenNZ

CHANGELOG.md

@@ -20,6 +20,7 @@
 - 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 ([#645]).
 - test: Bump to Vector `0.46.1` ([#657]).
+- test: Bump OPA to `1.4.2` ([#661]).
 
 ### Fixed
 
@@ -39,6 +40,7 @@
 [#654]: https://github.com/stackabletech/hbase-operator/pull/654
 [#655]: https://github.com/stackabletech/hbase-operator/pull/655
 [#657]: https://github.com/stackabletech/hbase-operator/pull/657
+[#661]: https://github.com/stackabletech/hbase-operator/pull/661
 
 ## [25.3.0] - 2025-03-21