Serialize variables with FP16: True and safetensors: True.

Variables converted by the [`diffusers`' `fp16_safetensors` CLI](https://github.com/huggingface/diffusers/blob/main/src/diffusers/commands/fp16_safetensors.py).

prior/diffusion_pytorch_model.fp16.safetensors

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+size 631435880

renderer/diffusion_pytorch_model.fp16.safetensors

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+size 452597858

text_encoder/model.fp16.safetensors

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