Enable stale gh action (#4316)
Enable stale gh action (#4316)

* Create stale.yml

Signed-off-by: Prasanth Pulavarthi <4247628b926a7248ea57e412cecdead7fcaeb26c@microsoft.com>

* Update stale.yml

Signed-off-by: Prasanth Pulavarthi <4247628b926a7248ea57e412cecdead7fcaeb26c@microsoft.com>
onnx/onnx,onnx/onnx,onnx/onnx,onnx/onnx