Update `EncodecIntegrationTest`
# What does this PR do?

Some test fail since the addition of this model. This PR just updates the expect output values.
_The documentation is not available anymore as the PR was closed or merged._<|||||>> Thanks @ydshieh - just to confirm, these updated values come from running the model on CUDA? (versus the original values, which were obtained on CPU)

Yes, it's on GPU. More specifically, on our CI runner's T4 GPU.<|||||>Perfect, thanks for updating the tests for CUDA! Also cc @ArthurZucker as a heads-up since we discussed this offline previously