chore: Enable the new Rubocop rules (#7122)

fixes: https://linear.app/chatwoot/issue/CW-1574/renable-the-disabled-rubocop-rules

spec/drops/user_drop_spec.rb

@@ -1,6 +1,6 @@
 require 'rails_helper'
 
-describe ::UserDrop do
+describe UserDrop do
   subject(:user_drop) { described_class.new(user) }
 
   let!(:user) { create(:user) }