Bring torch_xla pin to the latest torch_xla commit (03/08/2024). (#121529)
Update the torch_xla pin to a more recent one (03/08/2024). We need to make sure the torch_xla pin stays up-to-date so that pytorch can test against a up-to-date version of torch_xla.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/121529
Approved by: https://github.com/atalman
