update cy translation
update cy translation

Change-Id: Ic333e50a9ad6fd94405e4d6e442b1d8ad276b092
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/237472
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