Update requirements.txt

requirements.txt

@@ -1,6 +1,8 @@
-gradio==4.44.0
-# no explicit gradio-client pin — let gradio bring the matching client
+# Use a newer Gradio that avoids the schema bug
+gradio==4.59.2
 
+# NOTE: don't pin gradio-client exactly; let pip resolve a compatible version
+# (remove any explicit gradio-client==... line)
 PyPDF2
 sentence-transformers
 faiss-cpu