[Admin maintenance] Fix ZeroGPU

Thank you so much for having shared this Space with the community on this demo. We have upgraded the ZeroGPU infra-structure to run on modern blackwell architecture.
For that, we need to upgrade your demo to support that. This PR fixes your demo to work with the new architecture. As this is something we broke on our end, we may merge this PR autonomously. If this breaks unexpectedly or brings unintended consequences, feel free to revert, modify or otherwise. Any issues you can email apolinario@huggingface.co

demos/musicgen_app.py

@@ -195,6 +195,7 @@ def _do_predictions(texts, melodies, duration, progress=False, gradio_progress=N
     return out_wavs
 
 
+@spaces.GPU(duration=120)
 def predict_batched(texts, melodies):
     max_text_length = 512
     texts = [text[:max_text_length] for text in texts]