CLSA-2022-1655820524 Update of shim

Update to upstream 15.4 version - Add support for Secure Boot...

SUSE-RU-2020:1238-1 Recommended update for SUSE Manager Server 4.0

This update fixes the following issues: branch-network-formula: - Handle application/efi mime type - Allow http access to saltboot directory cobbler: - Signatures file now uses 'defaultautoinstall' which fixes import problem happening with some distributions bsc1159010 - Fix for kernel and initrd...