Currently GitKraken installation from .deb
package is broken on soon-to-be-released Ubuntu 20.04 (codename "focal"):
$ sudo gdebi -nq gitkraken-amd64.deb
[sudo] password for <username>:
(Reading database ... 262175 files and directories currently installed.)
Preparing to unpack .../gitkraken-amd64.deb ...
Unpacking gitkraken (6.6.0) over (6.5.4) ...
dpkg: dependency problems prevent configuration of gitkraken: