Fix huggingface_hub version conflict

- Update huggingface_hub to >=0.28.1 to satisfy gradio 5.25.0 requirements
- Resolve dependency conflict between transformers, gradio, and huggingface_hub

requirements.txt

@@ -28,7 +28,7 @@ python-dotenv==1.1.0
 spaces==0.34.2
 xxhash==3.5.0
 soundfile==0.13.1
-huggingface_hub==0.28.0
+huggingface_hub>=0.28.1
 
 # Audio processing
 librosa==0.11.0