Bump rspec-openapi from 0.18.2 to 0.18.3 (#708)

Bumps [rspec-openapi](https://github.com/exoego/rspec-openapi) from 0.18.2 to 0.18.3.
- [Release notes](https://github.com/exoego/rspec-openapi/releases)
- [Changelog](https://github.com/exoego/rspec-openapi/blob/master/CHANGELOG.md)
- [Commits](exoego/rspec-openapi@v0.18.2...v0.18.3)

---
updated-dependencies:
- dependency-name: rspec-openapi
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -481,7 +481,7 @@ GEM
     rspec-mocks (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.13.0)
-    rspec-openapi (0.18.2)
+    rspec-openapi (0.18.3)
       actionpack (>= 5.2.0)
       rails-dom-testing
       rspec-core