Update cava to rev 6 via SR 809688
    
    https://build.opensuse.org/request/show/809688
    by user jubalh + maxlin_factory
    - Update 0.7.0:
      Breaking changes:
      * Reworked noncurses output mode and made it default.
        The reworked noncurses mode uses a custom framebuffer technique that
        only draws changes per frame and only writes to the terminal once per
        frame. This results in far less cpu usage then ncurses. It is also
        free of the flickering that we see in ncurses mode #196
      * Colors are no longer set by default so hopefully cava will change
        color automatically in noncurses mode when using tools such as
        pywall #340 #181
      * Unfortunately html colors, gradient and key controls are not supported
        in noncurses.
      Other improvements:
      * separated bass, midtones and treble in to separate fftw operations