Update requirements.txt

requirements.txt

@@ -1,9 +1,9 @@
-streamlit
-google-generativeai
-python-dotenv
-langchain
-PyPDF2
-chromadb
-faiss-cpu
-langchain_google_genai
-langchain-community
+streamlit==1.25.0            # Replace with latest version
+google-generativeai==0.2.0    # Replace with latest version
+python-dotenv==1.0.0          # Replace with latest version
+langchain==0.95.0             # Replace with latest version
+PyPDF2==3.0.1                 # Replace with latest version
+chromadb==0.4.0               # Replace with latest version
+faiss-cpu==1.7.3              # Replace with latest version
+langchain_google_genai==0.0.1 # Replace with latest version
+langchain-community==0.0.1    # Replace with latest version