Add EleutherAI/pythia-12b to eval queue

EleutherAI/pythia-12b_eval_request_False_float16_Original.json

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+{"model": "EleutherAI/pythia-12b", "base_model": null, "revision": "35c9d7f32fbb108fb8b5bdd574eb03369d1eed49", "precision": "float16", "params": 12.0, "architectures": "GPTNeoXForCausalLM", "weight_type": "Original", "status": "PENDING", "submitted_time": "2024-06-12T12:28:45Z", "model_type": "pretrained", "job_id": -1, "job_start_time": null, "use_chat_template": false}