Comment 9 for bug 1934780

Things look good after updating:

u@nic:~$ apt policy shim-signed
shim-signed:
  Installed: 1.40.6+15.4-0ubuntu7
  Candidate: 1.40.6+15.4-0ubuntu7
  Version table:
 *** 1.40.6+15.4-0ubuntu7 500
        500 http://tw.ports.ubuntu.com/ubuntu-ports focal-proposed/main arm64 Packages
        100 /var/lib/dpkg/status
     1.40.4+15+1552672080.a4a1fbe-0ubuntu2 500
        500 http://tw.ports.ubuntu.com/ubuntu-ports focal-updates/main arm64 Packages
     1.40.3+15+1533136590.3beb971-0ubuntu1 500
        500 http://tw.ports.ubuntu.com/ubuntu-ports focal/main arm64 Packages

I get these messages when booting, but I think that is expected (booting goes on just fine):

Could not get variable storage info: Unsupported
Could not get variable storage info: Unsupported
Could not get variable storage info: Unsupported
Could not get variable storage info: Unsupported

I cannot test on hirsute as there is no hirsute image for this device. Considering the validation done there anyway (same binary).