Warning: https://repository.veeam.com/backup/linux/agent/dpkg/debian/public/dists/stable/InRelease: Policy will reject signature within a year, see --audit for details
This seems to be related to the GPG signature of the Veeam repository.
From what I understand, the message indicates that the repository signature will no longer be accepted in the near future unless it is updated to meet the current key/signature policy requirements.
Request: Could you please check and renew the repository signing key (or signature policy) so that it complies with the updated apt requirements introduced in Debian 13?