Update ref assembly

Author: halter73

src/Servers/Kestrel/Core/ref/Microsoft.AspNetCore.Server.Kestrel.Core.netcoreapp.cs

@@ -132,11 +132,12 @@ public KestrelServerOptions() { }
         public bool AddServerHeader { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public bool AllowResponseHeaderCompression { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public bool AllowSynchronousIO { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
-        public System.IServiceProvider ApplicationServices { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
-        public Microsoft.AspNetCore.Server.Kestrel.KestrelConfigurationLoader ConfigurationLoader { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
+        public System.IServiceProvider? ApplicationServices { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
+        public Microsoft.AspNetCore.Server.Kestrel.KestrelConfigurationLoader? ConfigurationLoader { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public bool DisableStringReuse { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public bool EnableAltSvc { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public Microsoft.AspNetCore.Server.Kestrel.Core.KestrelServerLimits Limits { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } }
+        public System.Func<string, System.Text.Encoding?> RequestHeaderEncodingSelector { [System.Runtime.CompilerServices.CompilerGeneratedAttribute] get { throw null; } [System.Runtime.CompilerServices.CompilerGeneratedAttribute] set { } }
         public Microsoft.AspNetCore.Server.Kestrel.KestrelConfigurationLoader Configure() { throw null; }
         public Microsoft.AspNetCore.Server.Kestrel.KestrelConfigurationLoader Configure(Microsoft.Extensions.Configuration.IConfiguration config) { throw null; }
         public Microsoft.AspNetCore.Server.Kestrel.KestrelConfigurationLoader Configure(Microsoft.Extensions.Configuration.IConfiguration config, bool reloadOnChange) { throw null; }