update sl translation
update sl translation

Change-Id: Id75b5286b3326413970227e9d5bbdf734c65dc2a
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/285177
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