update to net core 2.2

src/Admin/Program.cs

@@ -1,5 +1,7 @@
-using Microsoft.AspNetCore;
+using Bit.Core.Utilities;
+using Microsoft.AspNetCore;
 using Microsoft.AspNetCore.Hosting;
+using Serilog.Events;
 
 namespace Bit.Admin
 {
@@ -10,6 +12,8 @@ namespace Bit.Admin
             WebHost
                 .CreateDefaultBuilder(args)
                 .UseStartup<Startup>()
+                .ConfigureLogging((hostingContext, logging) =>
+                    logging.AddSerilog(hostingContext, e => e.Level >= LogEventLevel.Error))
                 .Build()
                 .Run();
         }