Use only new hash syntax

spec/support/database_cleaner.rb

@@ -7,7 +7,7 @@ RSpec.configure do |config|
     DatabaseCleaner.strategy = :transaction
   end
   
-  config.before(:each, :js => true) do
+  config.before(:each, js: true) do
     DatabaseCleaner.strategy = :truncation
   end
 

spec/support/login_macros.rb

@@ -3,7 +3,7 @@ module LoginMacros
   Warden.test_mode!
 
   def sign_in(user)
-    login_as(user, :scope => :user)
+    login_as(user, scope: :user)
   end
 
   def sign_out