Add TheBloke/Llama-2-13B-fp16 to eval queue

TheBloke/Llama-2-13B-fp16_eval_request_False_False_False.json

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+{"model": "TheBloke/Llama-2-13B-fp16", "base_model": "TheBloke/Llama-2-13B-fp16", "revision": "main", "private": false, "8bit_eval": false, "is_delta_weight": false, "status": "PENDING", "submitted_time": "2023-07-24T05:58:45Z"}