Update requirements.txt

requirements.txt

@@ -1,5 +1,9 @@
-langchain==0.1.10
-google-generativeai==0.4.0
-gradio==4.34.0
+gradio==4.19.2
+langchain==0.1.6
+langchain-google-genai==0.0.8
+google-generativeai==0.3.2
+pypdf==4.0.1
 faiss-cpu==1.7.4
-pypdf==3.17.1
+langchain-community==0.0.19
+protobuf==4.25.2
+langchain-community