Build fails when using TL2

[ghandilyanalina]

Description:
Build fails when using TL2

Steps to reproduce:
python setup_env.py -md models/BitNet-b1.58-2B-4T -q tl2

Error:
NFO:hf-to-gguf:Loading model: BitNet-b1.58-2B-4T
Traceback (most recent call last):
File "utils/convert-hf-to-gguf-bitnet.py", line 1168, in
main()
File "utils/convert-hf-to-gguf-bitnet.py", line 1146, in main
model_class = Model.from_model_architecture(hparams["architectures"][0])
File "utils/convert-hf-to-gguf-bitnet.py", line 240, in from_model_architecture
raise NotImplementedError(f'Architecture {arch!r} not supported!') from None
NotImplementedError: Architecture 'BitNetForCausalLM' not supported!