chore(deps): bump langchain from 0.1.3 to 0.1.4 (#1305)

Bumps [langchain](https://github.com/langchain-ai/langchainjs) from 0.1.3 to 0.1.4.
- [Release notes](https://github.com/langchain-ai/langchainjs/releases)
- [Changelog](https://github.com/langchain-ai/langchainjs/blob/main/release_workspace.js)
- [Commits](langchain-ai/langchainjs@0.1.3...0.1.4)

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

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

package.json

@@ -94,7 +94,7 @@
     "jsdom": "23.2.0",
     "jsonfeed-to-rss": "3.0.7",
     "katex": "0.16.9",
-    "langchain": "0.1.3",
+    "langchain": "0.1.4",
     "lottie-react": "2.4.0",
     "mdast-util-to-hast": "13.1.0",
     "mdast-util-toc": "7.0.0",