chore(deps): bump @langchain/openai in the langchain group (#1472)

Bumps the langchain group with 1 update: [@langchain/openai](https://github.com/langchain-ai/langchainjs).


Updates `@langchain/openai` from 0.4.5 to 0.4.7
- [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/commits)

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

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

Author: dependabot[bot]

package-lock.json

@@ -35,7 +35,7 @@
     "@fortawesome/react-fontawesome": "0.2.2",
     "@langchain/community": "0.3.36",
     "@langchain/core": "0.3.42",
-    "@langchain/openai": "0.4.5",
+    "@langchain/openai": "0.4.7",
     "@million/lint": "1.0.14",
     "ai": "4.1.46",
     "babel-plugin-react-compiler": "19.0.0-beta-714736e-20250131",