update sl translation
update sl translation

Change-Id: Ib792481ef09b33a5692de988c9db277a0edd6f92
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/284025
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