update rake

Change-Id: I09f3079af5a7574f39db7f3257122cc1be6869d2
Reviewed-on: https://gerrit.instructure.com/27996
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Nick Cloward <ncloward@instructure.com>
QA-Review: Cody Cutrer <cody@instructure.com>
Product-Review: Cody Cutrer <cody@instructure.com>

Gemfile

@@ -88,7 +88,7 @@ gem 'nokogiri', '1.5.6'
 # oauth gem, with rails3 fixes rolled in
 gem 'oauth-instructure', '0.4.9', :require => 'oauth'
 gem 'rack', CANVAS_RAILS2 ? '1.1.3' : '1.4.5'
-gem 'rake', '10.1.0'
+gem 'rake', '10.1.1'
 gem 'rdoc', '3.12'
 gem 'ratom-instructure', '0.6.9', :require => "atom" # custom gem until necessary changes are merged into mainstream
 gem 'rdiscount', '1.6.8'