Requirements outdated

torch, torchvision, pytest need to be upgraded in `/ptorchfi/requirements.txt` for goldeneye: https://github.com/pytorchfi/pytorchfi/blob/eb94ea001734cd6b9e725213eccac1ebcc49ff1e/requirements.txt

Current versions:

```
torch==1.8.1
torchvision==0.9.1
pytest==6.2.4
```