Update faenza-icon-theme to version 1.3 / rev 9 via SR 853264
    
    https://build.opensuse.org/request/show/853264
    by user dimstar + dimstar_suse
    - Use python3 to perform installation:
      + Replace python BuildRequires with python3-base.
      + Change syntax of faenza-install to be python3 compatible. (forwarded request 853070 from dimstar)