Merge pull request #3481 from akostadinov/cancancan

upgrade cancancan to a version supporting Rails 6

Gemfile

@@ -72,7 +72,7 @@ gem 'stripe', '~> 5.28.0' # we need the stripe gem because activemerchant can no
 gem 'acts_as_list', '~> 0.9.17'
 gem 'braintree', '~> 2.93'
 gem 'bugsnag', '~> 6.11'
-gem 'cancancan', '~> 2.3.0'
+gem 'cancancan', '~> 3.0.0'
 gem 'formtastic', '~> 4.0'
 gem 'htmlentities', '~>4.3', '>= 4.3.4'
 # TODO: Not actively maintained https://github.com/activeadmin/inherited_resources#notice replace with respond_with and fix things the rails way

Gemfile.lock

@@ -208,7 +208,7 @@ GEM
       activesupport (>= 3.0.0)
       uniform_notifier (~> 1.11)
     byebug (11.1.3)
-    cancancan (2.3.0)
+    cancancan (3.0.2)
     capybara (3.35.3)
       addressable
       mini_mime (>= 0.1.3)
@@ -917,7 +917,7 @@ DEPENDENCIES
   browser (~> 5.0.0)
   bugsnag (~> 6.11)
   bullet (~> 6.1.5)
-  cancancan (~> 2.3.0)
+  cancancan (~> 3.0.0)
   capybara (~> 3.35.3)!
   childprocess
   chronic