Update aruba requirement from ~> 0.13.0 to ~> 0.14.14

Updates the requirements on [aruba](https://github.com/cucumber/aruba) to permit the latest version.
- [Changelog](https://github.com/cucumber/aruba/blob/main/CHANGELOG.md)
- [Commits](cucumber/aruba@v0.13.0...v0.14.14)

---
updated-dependencies:
- dependency-name: aruba
  dependency-type: direct:development
...

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

rspec_api_documentation.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "bundler", ">= 1.16"
   s.add_development_dependency "fakefs", "~> 0.6.0"
   s.add_development_dependency "sinatra", "~> 1.4.7"
-  s.add_development_dependency "aruba", "~> 0.13.0"
+  s.add_development_dependency "aruba", "~> 0.14.14"
   s.add_development_dependency "capybara", "~> 2.6.2"
   s.add_development_dependency "rake", "~> 10.5.0"
   s.add_development_dependency "rack-test", "~> 0.6.3"