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.