Pin huggingface-hub to 0.24.7 to fix Unsloth _token import error

requirements.txt

@@ -10,6 +10,7 @@ gradio>=4.0.0
 # Pinned versions to avoid torch/transformers cache conflict
 torch==2.4.1
 transformers==4.44.2
+huggingface-hub==0.24.7
 peft==0.12.0
 accelerate==0.33.0
 bitsandbytes>=0.43.0