Upgrade to PyTorch 2.13 and CUDA 13 for faster MiniMax H3 on Blackwell

Reddit tip: on RTX 50-series Blackwell GPUs, upgrading to PyTorch 2.13 and CUDA 13 yields massive performance gains when running MiniMax H3. The poster initially held off due to custom nodes relying on older dependencies, but now recommends upgrading immediately.
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