Document issue with Backups and Updates tabs in 3.19.1 (#59059)

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: lindarodgers

data/release-notes/enterprise-server/3-19/1.yml

@@ -87,3 +87,5 @@ sections:
       When publishing npm packages in a workflow after restoring from a backup to GitHub Enterprise Server 3.13.5.gm4 or 3.14.2.gm3, you may encounter a `401 Unauthorized` error from the GitHub Packages service. This can happen if the restore is from an N-1 or N-2 version and the workflow targets the npm endpoint on the backup instance. To avoid this issue, ensure the access token is valid and includes the correct scopes for publishing to GitHub Packages.
     - |
       The setting to define private registries at the organization level for code scanning is only available if Dependabot is enabled for the instance.
+    - |
+      In patch 3.19.1, we identified an issue in the Management Console where the Backups (Preview) and Updates tabs may fail to open and instead return an Internal Server Error. We recommend using the command line interface (CLI) for backups and updates until an updated patch is released. [Updated: 2026-01-13]