chore: Update changelog

Author: NickLarsenNZ

CHANGELOG.md

@@ -34,6 +34,7 @@ All notable changes to this project will be documented in this file.
   - Replace stackable-operator `print_startup_string` with `tracing::info!` with fields.
 - 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 ([#707]).
+- test: Bump to Vector 0.46.1 ([#721]).
 
 ### Fixed
 
@@ -45,6 +46,7 @@ All notable changes to this project will be documented in this file.
 [#710]: https://github.com/stackabletech/opa-operator/pull/710
 [#712]: https://github.com/stackabletech/opa-operator/pull/712
 [#715]: https://github.com/stackabletech/opa-operator/pull/715
+[#721]: https://github.com/stackabletech/opa-operator/pull/721
 
 ## [25.3.0] - 2025-03-21