Update brltty to version 6.5 / rev 61 via SR 1094353
    
    https://build.opensuse.org/request/show/1094353
    by user olh + dimstar_suse
    - Use conditionals for sysusers_requires to allow quilt setup
    - Remove workarounds for old TCL
    - Enable parallel build again
    - Don't use %tmpfiles_create_package anymore.
      This macro cannot work on transactional systems. However this macro was
      supposed to be used only when the tmpfiles stuff was needed in advance, which
      doesn't seem to be the case for brltty.