chore: Update changelog

Author: siegfriedweber

CHANGELOG.md

@@ -6,8 +6,10 @@
 
 - Internal operator refactoring: introduce a build() step in the reconciler that
   assembles all relevant Kubernetes resources before anything is applied ([#814]).
+- Bump stackable-operator to 0.114.0 ([#827]).
 
 [#814]: https://github.com/stackabletech/airflow-operator/pull/814
+[#827]: https://github.com/stackabletech/airflow-operator/pull/827
 
 ## [26.7.0] - 2026-07-21