WebUI: update favicon.ico
    
    I noticed that FreeIPA favicon is a bit squished. I would like to unsquish it.
    And resize it to 32x32 pixels as it would look a bit better on HiDPI screens.
    
    Fixes: https://pagure.io/freeipa/issue/9449
    
    Signed-off-by: Viktor Ashirov <vashirov@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Carla Martinez <carlmart@redhat.com>