[Automated] Update base model metadata

Upload fp16 ONNX weights

Update README.md

Delete Constant_6_attr__value

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Rename onnx/model.onnx_data to onnx/sentence_transformers.onnx_data

Rename onnx/model_quantized.onnx to onnx/sentence_transformers_quantized.onnx

Rename onnx/sentence_transformer.onnx to onnx/sentence_transformers.onnx

Rename onnx/model.onnx to onnx/sentence_transformer.onnx

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initial commit