Comment # 2 on bug 1202120 from Dominique Leuenberger

(In reply to Ignaz Forster from comment #1)
> It seems the corresponding mokutils package will be released only with the
> next Tumbleweed snapshot: https://build.opensuse.org/request/show/992467.
> Until then MicroOS will prevent you from updating your system to a broken
> state ;-)

That means the error is actually in shim - it should have required the proper
version of mokutil (or conflict inappropriate versions) to ensure the things
get updated in the proper order.

At this time not much more we can do than 'wait for things to fall in place';
yet, assigning to Joey to fix the spec file (for future products)