Update keybase-client to version 6.0.2 / rev 22 via SR 1060407
https://build.opensuse.org/request/show/1060407
by user theMarix + dimstar_suse
- Integrate KBFS packages previously build via own source package
* Upstream integrated these into the same source.
* Also includes adding kbfs-related patches
ensure-mount-dir-exists.patch and
ensure-service-stop-unmounts-filesystem.patch.
- Upgrade Go version used for compilation to 1.19.
- Use Systemd unit file from upstream source.
- Replace deprecated tar_scm source service by obs_scm.
- Drop the no longer required go_nostrip macro.
- Drop unnessecary use of gofilelist macro.