Add GAI-LLM/llama-2-koen-13b-mixed-v11_2 to eval queue

GAI-LLM/llama-2-koen-13b-mixed-v11_2_eval_request_False_float16_Original.json

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+{"model": "GAI-LLM/llama-2-koen-13b-mixed-v11_2", "base_model": "beomi/llama-2-koen-13b", "revision": "main", "private": false, "precision": "float16", "weight_type": "Original", "status": "PENDING", "submitted_time": "2023-12-11T01:53:50Z", "model_type": "\u2b55 : instruction-tuned"}