Update go to version 1.20 / rev 105 via SR 1083582
    
    https://build.opensuse.org/request/show/1083582
    by user jfkw + dimstar_suse
    - Update to current stable go1.20
      Refs boo#1206346 go1.20 release tracking
    - Packaging improvements:
      * Re-enable debuginfo boo#1210938 remove spec comment "# nodebug"
      * Use Group: Development/Languages/Go instead of Other (forwarded request 1083581 from jfkw)