Update MvcTemplateTest.cs

Author: HaoK

src/ProjectTemplates/test/MvcTemplateTest.cs

@@ -28,7 +28,8 @@ public MvcTemplateTest(ProjectFactoryFixture projectFactory, ITestOutputHelper o
         [Fact]
         public async Task MvcTemplate_NoAuthFSharp() => await MvcTemplateCore(languageOverride: "F#");
 
-        [Fact]
+        [ConditionalFact]
+        [SkipOnHelix("cert failure", Queues = "OSX.1014.Amd64;OSX.1014.Amd64.Open")]
         public async Task MvcTemplate_NoAuthCSharp() => await MvcTemplateCore(languageOverride: null);
 
         private async Task MvcTemplateCore(string languageOverride)