chore(deps): bump @langchain/community from 0.3.49 to 0.3.50

Bumps [@langchain/community](https://github.com/langchain-ai/langchainjs) from 0.3.49 to 0.3.50.
- [Release notes](https://github.com/langchain-ai/langchainjs/releases)
- [Changelog](https://github.com/langchain-ai/langchainjs/blob/main/release_workspace.js)
- [Commits](https://github.com/langchain-ai/langchainjs/compare/@langchain/community==0.3.49...@langchain/core==0.3.50)

---
updated-dependencies:
- dependency-name: "@langchain/community"
  dependency-version: 0.3.50
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]