Quarantine Microsoft.Extensions.SecretManager.Tools.Tests.SecretManagerTests.Clear_Secrets

- https://dev.azure.com/dnceng/public/_build/results?buildId=640828&view=ms.vss-test-web.build-test-results-tab&runId=19910360&resultId=108857&paneView=debug

src/Tools/dotnet-user-secrets/test/SecretManagerTests.cs

@@ -270,6 +270,7 @@ namespace Microsoft.Extensions.SecretManager.Tools.Tests
         [Theory]
         [InlineData(true)]
         [InlineData(false)]
+        [QuarantinedTest]
         public void Clear_Secrets(bool fromCurrentDirectory)
         {
             var projectPath = _fixture.GetTempSecretProject();