Since Bookworm is out and I am running the apt_all plug-in for munin, I get the following error Message while updating the repo during the cronjob:

E: The value 'bookworm-updates' is invalid for APT::Default-Release as such a release is not available in the sources

Does anyone have any idea what to do with this error message? This is currently a showstopper to migrate all my servers debian 12.