Addition of Right Alt + Right Shift key combination
As there is already Alt + Shift and Left Alt + Left Shift key combinations, it would be useful to also have Right Alt + Right Shift.
https://gitlab.freedesktop.org/xkeyboard-config/xkeyboard-config/blob/master/rules/base.xml
Downstream bug: https://gitlab.xfce.org/xfce/xfce4-settings/-/issues/207