patch to upgrade langchain version

[HaoXuAI]

fix: #856

[dlqqq]

@HaoXuAI Thank you for making a contribution! The CI on this branch is failing because jupyter_ai_magics directly imports from langchain_community, which is not automatically being updated as langchain~=0.2.0 no longer depends on langchain_community.

I've fixed this in PR #897, which adds a direct dependency on langchain_community. Since this PR is very short, I'll close this in favor of #897 so the dependency upgrade can be merged & released more quickly.

Your contributions are always welcome, thank you!

[HaoXuAI]

@HaoXuAI Thank you for making a contribution! The CI on this branch is failing because jupyter_ai_magics directly imports from langchain_community, which is not automatically being updated as langchain~=0.2.0 no longer depends on langchain_community.

I've fixed this in PR #897, which adds a direct dependency on langchain_community. Since this PR is very short, I'll close this in favor of #897 so the dependency upgrade can be merged & released more quickly.

Your contributions are always welcome, thank you!

awesome thanks!