chore: Enable the new Rubocop rules (#7122)

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

spec/models/team_member_spec.rb

@@ -1,6 +1,6 @@
 require 'rails_helper'
 
-RSpec.describe TeamMember, type: :model do
+RSpec.describe TeamMember do
   describe 'associations' do
     it { is_expected.to belong_to(:team) }
     it { is_expected.to belong_to(:user) }