Post merge - Build fix

src/Umbraco.Infrastructure/Install/InstallSteps/NewInstallStep.cs

@@ -6,9 +6,9 @@ using System.Threading.Tasks;
 using Microsoft.Extensions.Options;
 using Newtonsoft.Json;
 using Umbraco.Core;
-using Umbraco.Core.BackOffice;
 using Umbraco.Core.Configuration.Models;
 using Umbraco.Core.Migrations.Install;
+using Umbraco.Core.Security;
 using Umbraco.Core.Services;
 using Umbraco.Extensions;
 using Umbraco.Web.Install.Models;