deps: bump openai from 4.67.2 to 4.68.0

Bumps [openai](https://github.com/openai/openai-node) from 4.67.2 to 4.68.0.
- [Release notes](https://github.com/openai/openai-node/releases)
- [Changelog](https://github.com/openai/openai-node/blob/master/CHANGELOG.md)
- [Commits](openai/openai-node@v4.67.2...v4.68.0)

---
updated-dependencies:
- dependency-name: openai
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -40,7 +40,7 @@
     "luxon": "^3.5.0",
     "microsoft-cognitiveservices-speech-sdk": "^1.40.0",
     "notistack": "^3.0.1",
-    "openai": "^4.67.2",
+    "openai": "^4.68.0",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
     "react-markdown": "^9.0.1",