Bump ruby-openai from 7.3.0 to 7.3.1

Bumps [ruby-openai](https://github.com/alexrudall/ruby-openai) from 7.3.0 to 7.3.1.
- [Release notes](https://github.com/alexrudall/ruby-openai/releases)
- [Changelog](https://github.com/alexrudall/ruby-openai/blob/main/CHANGELOG.md)
- [Commits](alexrudall/ruby-openai@v7.3.0...v7.3.1)

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

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

Gemfile.lock

@@ -464,7 +464,7 @@ GEM
     rubocop-rspec_rails (2.30.0)
       rubocop (~> 1.61)
       rubocop-rspec (~> 3, >= 3.0.1)
-    ruby-openai (7.3.0)
+    ruby-openai (7.3.1)
       event_stream_parser (>= 0.3.0, < 2.0.0)
       faraday (>= 1)
       faraday-multipart (>= 1)