Add Riiid/sheep-duck-llama-2 to eval queue

Riiid/sheep-duck-llama-2_eval_request_False_float32_Original.json

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+{"model": "Riiid/sheep-duck-llama-2", "base_model": "", "revision": "main", "private": false, "precision": "float32", "weight_type": "Original", "status": "PENDING", "submitted_time": "2023-12-03T18:27:15Z", "model_type": "pretrained", "likes": 32, "params": 0, "license": "llama2"}