Bump langsmith from 0.3.42 to 0.3.43 (#101)

Bumps [langsmith](https://github.com/langchain-ai/langsmith-sdk) from 0.3.42 to 0.3.43.
- [Release notes](https://github.com/langchain-ai/langsmith-sdk/releases)
- [Commits](langchain-ai/langsmith-sdk@v0.3.42...v0.3.43)

---
updated-dependencies:
- dependency-name: langsmith
  dependency-version: 0.3.43
  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==4.13.4
 langchain-couchbase==0.2.4
 langchain-community==0.3.23
 langchain-openai==0.3.15
-langsmith==0.3.42
+langsmith==0.3.43
 python-dotenv==1.1.0
 streamlit==1.45.0
 tqdm==4.67.1