update uk translation
update uk translation

Change-Id: I7ba23a9a05e498052174f36083979b23f2e2711a
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/284391
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>

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