Bump ruby-openai from 8.0.0 to 8.1.0 (#2036)

Bumps [ruby-openai](https://github.com/alexrudall/ruby-openai) from 8.0.0 to 8.1.0.
- [Release notes](https://github.com/alexrudall/ruby-openai/releases)
- [Changelog](https://github.com/alexrudall/ruby-openai/blob/main/CHANGELOG.md)
- [Commits](https://github.com/alexrudall/ruby-openai/compare/v8.0.0...v8.1.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -431,7 +431,7 @@ GEM
       sorbet-runtime (>= 0.5.10782)
     ruby-lsp-rails (0.4.0)
       ruby-lsp (>= 0.23.0, < 0.24.0)
-    ruby-openai (8.0.0)
+    ruby-openai (8.1.0)
       event_stream_parser (>= 0.3.0, < 2.0.0)
       faraday (>= 1)
       faraday-multipart (>= 1)