chore(mlx): upgrade mlx and mlx-lm

[gufengc]

📋 PR Title Format

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type(scope): concise message (max 50 chars)

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• type is one of: feat, fix, docs, refactor, perf, test, chore.
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• fix: Bug fix.
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💡 Description

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Key Changes

🔗 Related Issues

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✅ Checklist

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• I have added/updated tests that prove my fix or feature works (if applicable).
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