chore(deps-dev): bump langsmith from 0.4.37 to 0.6.3 (#1519)

Bumps [langsmith](https://github.com/langchain-ai/langsmith-sdk) from 0.4.37 to 0.6.3.
- [Release notes](https://github.com/langchain-ai/langsmith-sdk/releases)
- [Commits](https://github.com/langchain-ai/langsmith-sdk/commits)

---
updated-dependencies:
- dependency-name: langsmith
  dependency-version: 0.6.3
  dependency-type: indirect
...

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

Author: dependabot[bot]