Update requirements.txt

requirements.txt

@@ -1,5 +1,5 @@
-pandas>=2.0.0
-numpy>=1.24.0
+pandas>=1.0.0
+numpy>=1.0.0
 plotly>=5.0.0
-gradio>=4.13.0  # Critical - older versions have different APIs
-scipy>=1.10.0
+gradio>=3.0.0
+scipy>=1.0.0