docs: add NGINX ingress replacement PEM-9642 (#9381)

* docs: add NGINX ingress replacement PEM-9642

* docs: add link to epic

Author: addetz

docs/docs-content/release-notes/release-notes.md

@@ -23,6 +23,13 @@ tags: ["release-notes"]
 
 #### Features
 
+<!-- https://spectrocloud.atlassian.net/browse/PEM-9118 -->
+
+- Palette and VerteX installations now use
+  [Traefik for Kubernetes ingress](https://doc.traefik.io/traefik/reference/install-configuration/providers/kubernetes/kubernetes-ingress/).
+  The migration is seamless for new and existing Palette installations. This change follows the
+  [Ingress NGINX Retirement](https://kubernetes.io/blog/2025/11/11/ingress-nginx-retirement/).
+
 #### Improvements
 
 #### Deprecations and Removals