Fork test_tracedecorator_async (#2778)

Author: sentrivana

tests/tracing/test_decorator.py

@@ -44,6 +44,7 @@ def test_trace_decorator_no_trx():
             assert result2 == "return_of_sync_function"
 
 
+@pytest.mark.forked
 @pytest.mark.asyncio
 async def test_trace_decorator_async():
     with patch_start_tracing_child() as fake_start_child: