Merge branch 'allow-updating-subscriptions' into 'master'

Remove the restriction of trial_end date

See merge request gitlab-org/gitlab!36878

ee/lib/ee/api/namespaces.rb

@@ -116,10 +116,8 @@ module EE
 
             namespace = find_namespace!(params[:id])
             subscription = namespace.gitlab_subscription
-            trial_ends_on = params[:trial_ends_on]
 
             not_found!('GitlabSubscription') unless subscription
-            bad_request!("Invalid trial expiration date") if trial_ends_on&.past?
 
             subscription_params = declared_params(include_missing: false)
             subscription_params[:trial_starts_on] ||= subscription_params[:start_date] if subscription_params[:trial]

ee/spec/requests/api/namespaces_spec.rb

@@ -410,15 +410,6 @@ RSpec.describe API::Namespaces do
           expect(gitlab_subscription.reload.trial_ends_on).to eq(date)
         end
       end
-
-      context 'when the attr has an old date' do
-        it 'returns 400' do
-          do_put(namespace.id, admin, params.merge(trial_ends_on: 2.days.ago.to_date))
-
-          expect(response).to have_gitlab_http_status(:bad_request)
-          expect(gitlab_subscription.reload.trial_ends_on).to be_nil
-        end
-      end
     end
   end
 end