chore(deps): bump @ai-sdk/openai from 3.0.71 to 4.0.16

Bumps [@ai-sdk/openai](https://github.com/vercel/ai/tree/HEAD/packages/openai) from 3.0.71 to 4.0.16.
- [Release notes](https://github.com/vercel/ai/releases)
- [Changelog](https://github.com/vercel/ai/blob/main/packages/openai/CHANGELOG.md)
- [Commits](https://github.com/vercel/ai/commits/@ai-sdk/openai@4.0.16/packages/openai)

---
updated-dependencies:
- dependency-name: "@ai-sdk/openai"
  dependency-version: 4.0.16
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]