Fix torchbench CI issue.
The TorchBench OnDemand CI is currently broken because:
1) it requires a new package `psutil` to be pre-installed because the improved subprocess worker component requires that
2) `git lfs` needs to update forcefully, and the checkout action doesn't support that
This PR adds the new `psutil` dependency, and use `install.py`, not the checkout action, to fix the CI.
RUN_TORCHBENCH: nvidia_deeprecommender
Pull Request resolved: https://github.com/pytorch/pytorch/pull/73379
