Update requirements.txt

requirements.txt

@@ -1,7 +1,13 @@
-langchain~=0.0.123
-openai~=0.27.2
-unstructured
-faiss-cpu
-gradio~=3.25.0
-pinecone-client
-tiktoken
+langchain==0.0.157
+openai==0.27.6
+unstructured==0.6.2
+faiss-cpu==1.7.4
+gradio==3.26.0
+pinecone-client==2.2.1
+fastapi==0.95.1
+pydantic==1.10.7
+psycopg2==2.9.6
+python-dotenv==1.0.0
+uvicorn==0.22.0
+tiktoken==0.3.3
+python-multipart==0.0.6