Update expected values for `test_xglm_sample`
# What does this PR do?

Despite the `probs` value has only a difference of  `7.59e-07`, the `torch.multinomial(probs, num_samples=1)` still gives different `next_tokens`:

  - 3967 (`sun`) in `torch 1.13.1`
  - 4565 (`water`) in `torch 2.0`

Currently I keep both values, but we can remove the one for `torch 1.13` soon.
_The documentation is not available anymore as the PR was closed or merged._