Kept back upgrade of fwupd

What's wrong now with fwupd? It was OK since May 1st, 2020 on newly installed Ubuntu 20.04

The following packages have been kept back:
   fwupd 
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

It's a partial fix for a bug LP #1883568

Both packages, fwupd and fwupd-signed should be installed. One was uploaded, the other was uploaded later. So there was briefly a version mismatch, which prevented the new fwupd from installing.

There is Bug report on the mismatch: LP #1883595, and the fwupd-signed package has been uploaded to -proposed. Time to be patient.

Simply wait until fwupd-signed catches up, then both will install together automagically.

Do not try to force the newer version using dist-upgrade or full-upgrade. If you already did, then simply ensure that you have both packages installed.