chore: enable freeze string literals by comment

spec/controllers/api/v2/base_controller_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe API::V2::BaseController, type: :controller do
   describe 'ensure_authorized_network and token_is_not_expired' do
     let(:admin) { administrateurs(:default_admin) }

spec/controllers/api/v2/dossiers_controller_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe API::V2::DossiersController do
   let(:dossier) { create(:dossier, :accepte, :with_attestation) }
   let(:sgid) { dossier.to_sgid(expires_in: 1.hour, for: 'api_v2') }

spec/controllers/api/v2/graphql_controller_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe API::V2::GraphqlController do
   let(:admin) { administrateurs(:default_admin) }
   let(:generated_token) { APIToken.generate(admin) }

spec/controllers/api/v2/graphql_controller_stored_queries_spec.rb

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 describe API::V2::GraphqlController do
   let(:admin) { administrateurs(:default_admin) }
   let(:generated_token) { APIToken.generate(admin) }