feat: Support objectOverrides (#885)

* chore: Switch secret-operator volume to ephemeral

* feat: Support objectOverrides

* changelog

Author: sbernauer

CHANGELOG.md

@@ -4,13 +4,19 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+### Added
+
+- Support objectOverrides using `.spec.objectOverrides`.
+  See [objectOverrides concepts page](https://docs.stackable.tech/home/nightly/concepts/overrides/#object-overrides) for details ([#885]).
+
 ### Fixed
 
 - Also listen on the loopback interface so that k8s port-forwards work ([#870]).
 - The operator now utilizes the `.spec.clusterConfig.authorization.opa.package` property instead of hard-coding the package name to `nifi`  ([#881]).
 
 [#870]: https://github.com/stackabletech/nifi-operator/pull/870
 [#881]: https://github.com/stackabletech/nifi-operator/pull/881
+[#885]: https://github.com/stackabletech/nifi-operator/pull/885
 
 ## [25.11.0] - 2025-11-07