Bump @langchain/core from 0.1.63 to 0.3.39

Bumps [@langchain/core](https://github.com/langchain-ai/langchainjs) from 0.1.63 to 0.3.39.
- [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/core"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

examples/next-langchain/package.json

@@ -11,7 +11,7 @@
   "dependencies": {
     "@ai-sdk/react": "1.1.11",
     "@langchain/openai": "0.0.28",
-    "@langchain/core": "0.1.63",
+    "@langchain/core": "0.3.39",
     "ai": "4.1.28",
     "langchain": "0.1.36",
     "next": "latest",