[OpenAFS] Help installing 1.8.6-5 from PPA on ubuntu 18.04? (unmet dependency on init-system-helpers >= 1.54)

[David Eck]

I have tried to upgrade from openafs 1.8.0 to 1.8.6-5 on Ubuntu 18.04 to
fix the recently discovered bug, using the PPA openafs/stable

However, there is an unmet dependency on init-system-helpers (>= 1.54).
The installed version is 1.51.  So the upgrade fails.

Can anyone help with instructions for getting init-system-helper 1.54+
on Ubuntu 18.04, or can this dependency be fixed in the PPA?

Many thanks for any help!  I am not an expert system admin, but my
department needs to get AFS working again.

--
David Eck
Department of Mathematics and Computer Science
Hobart and William Smith Colleges
https://math.hws.edu/eck/