Quarantine recently failing tests (#41132)

src/Servers/Kestrel/test/Interop.FunctionalTests/Http3/Http3RequestTests.cs

@@ -1471,6 +1471,7 @@ public class Http3RequestTests : LoggedTest
     [MsQuicSupported]
     [InlineData(HttpProtocols.Http3)]
     [InlineData(HttpProtocols.Http2)]
+    [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/39985")]
     public async Task GET_GracefulServerShutdown_AbortRequestsAfterHostTimeout(HttpProtocols protocol)
     {
         // Arrange

src/Servers/Kestrel/test/Interop.FunctionalTests/Http3/Http3TlsTests.cs

@@ -112,6 +112,7 @@ public class Http3TlsTests : LoggedTest
     [InlineData(ClientCertificateMode.DelayCertificate)]
     [MsQuicSupported]
     [OSSkipCondition(OperatingSystems.MacOSX | OperatingSystems.Linux, SkipReason = "https://github.com/dotnet/aspnetcore/issues/35800")]
+    [QuarantinedTest("https://github.com/dotnet/aspnetcore/issues/41131")]
     public async Task ClientCertificate_NoOrDelayed_Available_Ignored(ClientCertificateMode mode)
     {
         var builder = CreateHostBuilder(async context =>