Support kernels before 6.6.8
Currently trixie does not have a kernel that provides a versioned vmlinuz. So, if an unversioned vmlinu[xz] file is found, use that one. This fixes daily builds of the installer on trixie.
Currently trixie does not have a kernel that provides a versioned vmlinuz. So, if an unversioned vmlinu[xz] file is found, use that one. This fixes daily builds of the installer on trixie.