Update requirements.txt

requirements.txt

@@ -1,9 +1,8 @@
 # Pin Gradio to a modern version, as this is critical for the server functions.
 gradio==4.29.0
 
-# Explicitly add websockets, as yfinance requires it at runtime.
-# Let pip choose a compatible version.
-websockets
+# Explicitly add websockets, as yfinance requires a modern version.
+websockets>=12.0
 
 # Let pip find compatible versions for the rest of the libraries.
 tensorflow