Set tox version constraint (#2472)

set tox version constraint - tox-dev/tox#3110

Author: yunchu

requirements/dev.txt

@@ -1,6 +1,5 @@
 # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
 # Development Requirements.                                                   #
-tox==4.4.5
 pre-commit==2.20.0
 pylint
 pytest
@@ -10,3 +9,4 @@ pytest-mock
 onnx==1.13.0
 onnxruntime==1.14.1
 pytest-csv
+tox>=4.5.1.1