Update requirements.txt

requirements.txt

@@ -1,6 +1,6 @@
-gradio
-torch
-transformers
-simple_salesforce
-python-dotenv
-requests  # Optional, for any extended functionality
+gradio==4.16.0
+torch>=2.0.0
+transformers>=4.40.0
+simple-salesforce>=1.12.4
+python-dotenv>=1.0.1
+fpdf==1.7.2