update cy translation
update cy translation

Change-Id: I7c6347b0a1e871707880f2e278f88dd5b0345376
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/280681
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