fix: pytorch 1.4.0 py2 not supported

Deng · Deng · commit aa74a4008267 · 2020-02-26T15:44:43.000-08:00
diff --git a/src/sagemaker/pytorch/defaults.py b/src/sagemaker/pytorch/defaults.py
@@ -23,4 +23,4 @@
 
 PYTHON_VERSION = "py3"
 
-LATEST_PY2_VERSION = "1.4.0"
+LATEST_PY2_VERSION = "1.3.1"
