update cy translation
update cy translation

Change-Id: Ia9c192b94b5c6a1e824e950f4f33c0fab3bf17b0
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/261576
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms