Updates torchvision version (#38848)
Summary:
In PyTorch 1.6 integer division using torch.div will throw a runtime error. When PyTorch Master adopts this behavior some of our ONNX tests would break if we continued to import torchvision v0.5, since v0.5 uses torch.div to perform integer division. fmassa and I recently updated Torchvision to use torch.floor_divide for integer division (at least on paths covered by the PyTorch OSS CI tests), and this PR updates our torchvision test version to include those changes. This will prevent the PyTorch OSS CI from breaking when PyTorch Master adopts the 1.6 integer division behavior.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/38848
Differential Revision: D21679988
Pulled By: mruberry
fbshipit-source-id: 1333f6254c295909cf05b6f3e352e4a0c336e5af
