Update deprecated torch.ger
` torch.ger` was deprecated long time ago and `torch.outer` is a direct replacement: https://pytorch.org/docs/stable/generated/torch.ger.html
@sgugger please take a look.<|||||>_The documentation is not available anymore as the PR was closed or merged._<|||||>A test (I believe unrelated to the change) timed out https://app.circleci.com/pipelines/github/huggingface/transformers/66846/workflows/ae63fb76-7260-490e-8301-7c6cf986e693/jobs/833163<|||||>Yes it's unrelated, merging :-)