Dependency resolution for npm in package.json

[amacsmith]

Description

@langchain/community, llm-answer-engine, and langchain require different minor requirements for @vercel/kv. Langchain and langchain/community both require ^0.0.23 vs ^1.0.1 in llm-answer-engine repo. I removed that line and also recommend creating a package.lock file and committing.

Let me know if anything else is needed.