fixing unit test for PT 2.3 change

Author: adtian2

tests/unit/sagemaker/image_uris/test_smp_v2.py

@@ -38,6 +38,9 @@ def test_smp_v2(load_config):
                         if "2.1" in version or "2.2" in version or "2.3" in version:
                             cuda_vers = "cu121"
 
+                        if "2.3" in version:
+                            py_version = "py311"
+
                         uri = image_uris.get_training_image_uri(
                             region,
                             framework="pytorch",