transformers>=4.57.3,<5

[joshuasundance-swca]

Related issue: #39

qwen-asr hard-pins transformers==4.57.6, preventing co-installation with qwen-tts despite verified compatibility.

This pull request makes the transformers dependency more flexible, allowing the installation of qwen-tts and qwen-asr in the same environment.

To confirm functionality:

pip install \
  git+https://github.com/joshuasundance-swca/Qwen3-ASR.git@transformers-pin \
  git+https://github.com/joshuasundance-swca/Qwen3-TTS.git@transformers-pin

[MrXnneHang]

yes，we need it.