Fix spec failure

ee/app/serializers/scim_oauth_access_token_entity.rb

 # frozen_string_literal: true
 
 class ScimOauthAccessTokenEntity < Grape::Entity
+  include ::API::Helpers::RelatedResourcesHelpers
+
+  SCIM_PATH = '/api/scim/v2/groups'
+
   expose :scim_api_url do |scim|
-    Gitlab::Routing.url_helpers.group_scim_oauth_url(scim.group)
+    expose_url("#{SCIM_PATH}/#{scim.group.full_path}")
   end
 
   expose :token, as: :scim_token

ee/spec/controllers/groups/scim_oauth_controller_spec.rb

@@ -77,7 +77,7 @@ describe Groups::ScimOauthController do
           end
 
           it 'shows the url' do
-            expect(json_response['scim_api_url']).to eq("http://localhost/groups/#{group.full_path}/-/scim_oauth")
+            expect(json_response['scim_api_url']).to eq("http://localhost/api/scim/v2/groups/#{group.full_path}")
           end
         end
       end