Bump langsmith from 0.1.129 to 0.1.139 (#69)

Bumps [langsmith](https://github.com/langchain-ai/langsmith-sdk) from 0.1.129 to 0.1.139.
- [Release notes](https://github.com/langchain-ai/langsmith-sdk/releases)
- [Commits](langchain-ai/langsmith-sdk@v0.1.129...v0.1.139)

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

Signed-off-by: dependabot[bot] <support@github.com>
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==0.2.0
 langchain-community==0.3.4
 langchain-openai==0.2.3
-langsmith==0.1.129
+langsmith==0.1.139
 python-dotenv==1.0.1
 streamlit==1.38.0
 tqdm==4.66.6