Add cstr/llama3-8b-spaetzle-v20 to eval queue

cstr/llama3-8b-spaetzle-v20_eval_request_False_bfloat16_Original.json

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+{"model": "cstr/llama3-8b-spaetzle-v20", "base_model": "", "revision": "main", "precision": "bfloat16", "weight_type": "Original", "status": "PENDING", "submitted_time": "2024-06-06T18:17:54Z", "model_type": "\u2b55 : instruction-tuned", "likes": 0, "params": 8.03, "license": "llama3"}