Bump langsmith from 0.2.7 to 0.3.4 (#83)

Bumps [langsmith](https://github.com/langchain-ai/langsmith-sdk) from 0.2.7 to 0.3.4.
- [Release notes](https://github.com/langchain-ai/langsmith-sdk/releases)
- [Commits](langchain-ai/langsmith-sdk@v0.2.7...v0.3.4)

---
updated-dependencies:
- dependency-name: langsmith
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -2,7 +2,7 @@ beautifulsoup4==4.12.3
 langchain-couchbase==0.2.2
 langchain-community==0.3.13
 langchain-openai==0.3.3
-langsmith==0.2.7
+langsmith==0.3.4
 python-dotenv==1.0.1
 streamlit==1.41.1
 tqdm==4.67.1