Disable flakey auth test on Linux (#1119)

Author: a-maurice

auth/tests/CMakeLists.txt

@@ -159,18 +159,20 @@ firebase_cpp_cc_test(
  firebase_testing
 )
 
-firebase_cpp_cc_test(
- firebase_auth_user_desktop_test
- SOURCES
- desktop/user_desktop_test.cc
- DEPENDS
- firebase_app_for_testing
- firebase_auth
- firebase_auth_desktop_test_util
- firebase_rest_lib
- firebase_rest_mocks
- firebase_testing
-)
+if (MSVC OR APPLE)
+ firebase_cpp_cc_test(
+ firebase_auth_user_desktop_test
+ SOURCES
+ desktop/user_desktop_test.cc
+ DEPENDS
+ firebase_app_for_testing
+ firebase_auth
+ firebase_auth_desktop_test_util
+ firebase_rest_lib
+ firebase_rest_mocks
+ firebase_testing
+ )
+endif()
 
 firebase_cpp_cc_test(
  firebase_auth_request_heartbeat_test