Update requirements.txt

requirements.txt

@@ -1,6 +1,6 @@
 gradio>=3.0
-# Add ALL dependencies your Zonos model requires here
-# Example:
-# numpy>=1.20
-# torch>=1.10
-# soundfile>=0.10
+numpy>=1.20
+torch>=1.10
+soundfile>=0.10
+librosa>=0.9.1  # Common TTS dependency
+base64           # Add this