chore: fix test import for test_decompositions.py

Author: peri044

Diff for: tests/py/dynamo/lowering/test_decompositions.py

@@ -1,9 +1,10 @@
 import torch
 import torch_tensorrt
 from parameterized import parameterized
-from testing_utilities import DECIMALS_OF_AGREEMENT, lower_graph_testing
 from torch.testing._internal.common_utils import TestCase, run_tests
 
+from ..testing_utilities import DECIMALS_OF_AGREEMENT, lower_graph_testing
+
 
 class TestLowering(TestCase):
     def test_lowering_inplace_op(self):