Build(deps): Bump ruby-openai from 7.4.0 to 8.0.0

Bumps [ruby-openai](https://github.com/alexrudall/ruby-openai) from 7.4.0 to 8.0.0.
- [Release notes](https://github.com/alexrudall/ruby-openai/releases)
- [Changelog](https://github.com/alexrudall/ruby-openai/blob/main/CHANGELOG.md)
- [Commits](alexrudall/ruby-openai@v7.4.0...v8.0.0)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -625,7 +625,7 @@ GEM
     rubocop-rspec (3.5.0)
       lint_roller (~> 1.1)
       rubocop (~> 1.72, >= 1.72.1)
-    ruby-openai (7.4.0)
+    ruby-openai (8.0.0)
       event_stream_parser (>= 0.3.0, < 2.0.0)
       faraday (>= 1)
       faraday-multipart (>= 1)