Fixing Pytorch training python version in tests

Author: nargokul

tests/conftest.py

@@ -254,6 +254,8 @@ def mxnet_eia_latest_py_version():
 
 @pytest.fixture(scope="module", params=["py2", "py3"])
 def pytorch_training_py_version(pytorch_training_version, request):
+    if Version(pytorch_training_version) >= Version("2.6"):
+        return "py312"
     if Version(pytorch_training_version) >= Version("2.3"):
         return "py311"
     elif Version(pytorch_training_version) >= Version("2.0"):