Skip test_fsdp2 if PyTorch version is 2.11.0 or higher (#4168)

* Skip test_fsdp2 if PyTorch version is 2.11.0 or higher

* fix ruff

Author: jcaip

test/test_low_bit_optim.py

@@ -533,6 +533,7 @@ def world_size(self) -> int:
 
     @skip_if_lt_x_gpu(_FSDP_WORLD_SIZE)
     @skip_if_rocm("ROCm enablement in progress")
+    @pytest.mark.skipif(torch_version_at_least("2.11.0"), reason="Failing in CI")
     def test_fsdp2(self):
         # we do this to avoid all combinations
         args_list = [