chore: fixes mock setup

Signed-off-by: Vincent Biret <vibiret@microsoft.com>

Author: baywet

test/Microsoft.OpenApi.Tests/Mocks/OpenApiComponentsSerializationTests.cs

@@ -26,6 +26,8 @@ public OpenApiComponentsSerializationTests()
             _components.Responses["200"] = _responseMock.Object;
             _components.Parameters["limit"] = _parameterMock.Object;
             _components.Headers["x-rate-limit"] = _headerMock.Object;
+            _securitySchemeMock.Object.Type = SecuritySchemeType.Http;
+            _securitySchemeMock.Object.Scheme = "bearer";
             _components.SecuritySchemes["api_key"] = _securitySchemeMock.Object;
             _components.Links["UserRepositories"] = _linkMock.Object;
             _components.Callbacks["onData"] = _callbackMock.Object;