bump rake
bump rake

Change-Id: I73cf6b9d85ff49214b3849551770b5c0c16c0db6
Reviewed-on: https://gerrit.instructure.com/70690
Tested-by: Jenkins
Reviewed-by: Rob Orton <7e09c9d3e96378bf549fc283fd6e1e5b7014cc33@instructure.com>
Product-Review: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>
QA-Review: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>

redconfetti/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms,HotChalk/canvas-lms,instructure/canvas-lms,dgynn/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,dgynn/canvas-lms,HotChalk/canvas-lms,grahamb/canvas-lms,matematikk-mooc/canvas-lms,fronteerio/canvas-lms,redconfetti/canvas-lms,fronteerio/canvas-lms,redconfetti/canvas-lms,matematikk-mooc/canvas-lms,dgynn/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,venturehive/canvas-lms,instructure/canvas-lms,redconfetti/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,matematikk-mooc/canvas-lms,SwinburneOnline/canvas-lms,instructure/canvas-lms,fronteerio/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,matematikk-mooc/canvas-lms,grahamb/canvas-lms,djbender/canvas-lms,HotChalk/canvas-lms,fronteerio/canvas-lms,grahamb/canvas-lms,roxolan/canvas-lms,SwinburneOnline/canvas-lms,dgynn/canvas-lms,SwinburneOnline/canvas-lms,roxolan/canvas-lms,roxolan/canvas-lms,sfu/canvas-lms,roxolan/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,venturehive/canvas-lms,instructure/canvas-lms,HotChalk/canvas-lms,instructure/canvas-lms,djbender/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms