Describe the bug
I want to export a pytorch transformer model: longformer. The model scripts contains padding on boolean mask here
Pad-13 spec type constraint supports bool (this is newly introduced in opset 13, not 11)
but it looks onnxruntime does not support bool type for Pad-13, see here
Could we add the support for bool? Thanks.

Urgency
blocking pytorch transformer model export.

System information

• OS Platform and Distribution (e.g., Linux Ubuntu 16.04): Linux Ubuntu 20.04
• ONNX Runtime installed from (source or binary): pypi
• ONNX Runtime version: 1.7.0
• Python version: 3.7
• Visual Studio version (if applicable):
• GCC/Compiler version (if compiling from source):
• CUDA/cuDNN version:
• GPU model and memory:

To Reproduce

• Attach the ONNX model
  pad.zip