Update requirements.txt

requirements.txt

@@ -32,7 +32,7 @@ soundfile>=0.13.0,<1
 tensorboard>=2.19.0
 torchfcpe>=0.0.4,<0.1
 tqdm>=4.67.0,<5
-transformers>=4.50.0,<5.0  # Changed from <4.50 to allow newer version
+transformers>=4.0,<5.0  # Loosened to work with gradio 3.x
 
 # RVC imports fairseq directly.
 fairseq @ git+https://github.com/One-sixth/fairseq.git