add back previous release note

Author: nvanthao

docs/release-notes/rn-app-manager.md

@@ -43,6 +43,7 @@ Released on December 12, 2024
 Support for Kubernetes: 1.29, 1.30, and 1.31
 
 ### New Features {#new-features-1-122-0}
+* Adds support for [orLabelSelectors](https://docs.replicated.com/reference/custom-resource-backup#fields) to the velero.io/v1 Backup resource for [Full Snapshots](https://docs.replicated.com/vendor/snapshots-overview).
 * Adds support for the `kots.io/keep` annotation, which prevents KOTS from deleting resources during an upgrade if the resource is no longer present in the new release.
 
 ## 1.121.2