Update adwaita-qt to version 1.2.1 / rev 8 via SR 885673
    
    https://build.opensuse.org/request/show/885673
    by user dimstar + dimstar_suse
    - Fix SLPP package name:
      + Rename libadwaitaqt1_2_1 to  libadwaitaqt1: the libraries have
        a sover of '1'.
      + Obsolete the previously wrongly named  libadwaitaqt1_2_0 (
        libadwaitaqt1_2_1 was never shipped in a product).
    
    - Update to 1.2.1
      * Fixes for Adwaita library
      * Define ADWAITAQT_LIBRARIES variable
      * Define ADWAITAQT_INCLUDE_DIRS variable