Update transformers and TIMM with Dependabot (#2644)
Summary:
Same as what PyTorch is using https://github.com/pytorch/pytorch/blob/main/.github/dependabot.yml
Pull Request resolved: https://github.com/pytorch/benchmark/pull/2644
Reviewed By: xuzhao9
Differential Revision: D82753407
Pulled By: huydhn
fbshipit-source-id: 00f38f597a835ba8e4ca50c16dddbc6cfd2e742d
