build(deps): bump openai from 0.28.1 to 1.2.1

Bumps [openai](https://github.com/openai/openai-python) from 0.28.1 to 1.2.1.
- [Release notes](https://github.com/openai/openai-python/releases)
- [Changelog](https://github.com/openai/openai-python/blob/main/CHANGELOG.md)
- [Commits](openai/openai-python@v0.28.1...v1.2.1)

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

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