Revert "Revert "Updated change log for namespace release" (nginx#466)"

This reverts commit b9e1264.

Author: weli02

content/nginx-one/changelog.md

@@ -30,6 +30,20 @@ h2 {
 
 Stay up-to-date with what's new and improved in the F5 NGINX One Console.
 
+## Apr 28, 2025
+
+### Manage RBAC access with namespaces
+
+We have added support for namespaces in N1C. You can now:
+
+- Manage resources in isolation in different namespaces.
+- Configure granular user permission controls base on namespace.
+
+If you already have set up resources in a namespace that:
+
+- Does not exist in your F5 Distributed Cloud tenant
+- Was deleted from your NGINX One Console tenant
+
 ## April 3, 2025
 
 ### Create Custom Roles with more precise permissions