small fix: Packaging version switch (#2315)

Author: gs-olive

py/torch_tensorrt/dynamo/backend/backends.py

@@ -20,7 +20,7 @@
 from packaging import version
 
 # Modify import location of utilities based on Torch version
-if version.parse(torch_tensorrt.sanitized_torch_version()) <= version.parse("2.1.0"):
+if version.parse(torch_tensorrt.sanitized_torch_version()) < version.parse("2.1.1"):
     from torch._inductor.freezing import ConstantFolder, replace_node_with_constant
 else:
     from torch._inductor.constant_folding import (