bump nokogiri
bump nokogiri

Change-Id: Ibefaf48d0de044e52ee6e92655fb103c4b5d5511
Reviewed-on: https://gerrit.instructure.com/60830
Reviewed-by: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>
QA-Review: Cody Cutrer <c4fe2b1d90ef8f2548c8aeabfa633434316f0305@instructure.com>
Product-Review: August Thornton <9adc7a1161ddf32ff608de792a7e50179545f026@instructure.com>
Tested-by: Brian Palmer <3cb4e1df5ec4da2c7c4af7c52cec8cf340a55a10@instructure.com>

whalejasmine/canvas-lms,venturehive/canvas-lms,venturehive/canvas-lms,fronteerio/canvas-lms,jay3126/canvas-lms,djbender/canvas-lms,tgroshon/canvas-lms,juoni/canvas-lms,leftplusrightllc/canvas-lms,HotChalk/canvas-lms,sfu/canvas-lms,redconfetti/canvas-lms,kyroskoh/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms,fronteerio/canvas-lms,antoniuslin/canvas-lms,antoniuslin/canvas-lms,efrj/canvas-lms,tgroshon/canvas-lms,leftplusrightllc/canvas-lms,greyhwndz/canvas-lms,juoni/canvas-lms,utkarshx/canvas-lms,utkarshx/canvas-lms,skmezanul/canvas-lms,kyroskoh/canvas-lms,antoniuslin/canvas-lms,greyhwndz/canvas-lms,sdeleon28/canvas-lms,jay3126/canvas-lms,antoniuslin/canvas-lms,redconfetti/canvas-lms,sfu/canvas-lms,efrj/canvas-lms,tgroshon/canvas-lms,grahamb/canvas-lms,grahamb/canvas-lms,efrj/canvas-lms,SwinburneOnline/canvas-lms,SwinburneOnline/canvas-lms,skmezanul/canvas-lms,djbender/canvas-lms,venturehive/canvas-lms,redconfetti/canvas-lms,sdeleon28/canvas-lms,djbender/canvas-lms,kyroskoh/canvas-lms,sfu/canvas-lms,roxolan/canvas-lms,grahamb/canvas-lms,roxolan/canvas-lms,sfu/canvas-lms,HotChalk/canvas-lms,utkarshx/canvas-lms,skmezanul/canvas-lms,venturehive/canvas-lms,grahamb/canvas-lms,SwinburneOnline/canvas-lms,whalejasmine/canvas-lms,leftplusrightllc/canvas-lms,jay3126/canvas-lms,HotChalk/canvas-lms,greyhwndz/canvas-lms,leftplusrightllc/canvas-lms,sfu/canvas-lms,whalejasmine/canvas-lms,juoni/canvas-lms,sfu/canvas-lms,juoni/canvas-lms,whalejasmine/canvas-lms,efrj/canvas-lms,jay3126/canvas-lms,fronteerio/canvas-lms,fronteerio/canvas-lms,tgroshon/canvas-lms,greyhwndz/canvas-lms,roxolan/canvas-lms,djbender/canvas-lms,redconfetti/canvas-lms,roxolan/canvas-lms,utkarshx/canvas-lms,HotChalk/canvas-lms,skmezanul/canvas-lms,grahamb/canvas-lms,sdeleon28/canvas-lms,sdeleon28/canvas-lms,kyroskoh/canvas-lms