feature, NGINX One: Add release note for certs on CSGs

Author: mjang

content/nginx-one/changelog.md

@@ -34,6 +34,18 @@ Stay up-to-date with what's new and improved in the F5 NGINX One Console.
 
 ## January 20, 2025
 
+### Manage certificates with Config Sync Groups
+
+With the NGINX One Console, you can now:
+
+Manage certificates in Config Sync Groups. The certificate can be managed or unmanaged. You can:
+
+- Add a certificate to a Config Sync Group
+- Remove a certificate from a Config Sync Group
+- Delete deployed certificates
+
+For more information, including warnings about risks, see our documentation on how you can [Manage certificates]({{< relref "/nginx-one/how-to/certificates/manage-certificates.md" >}})
+
 ### Revert a configuration
 
 Using the NGINX One Console you can now: