Update cucumber requirement from >= 3.2, < 8 to >= 3.2, < 9 (#541)

Updates the requirements on [cucumber](https://github.com/cucumber/cucumber-ruby) to permit the latest version.
- [Release notes](https://github.com/cucumber/cucumber-ruby/releases)
- [Changelog](https://github.com/cucumber/cucumber-ruby/blob/main/CHANGELOG.md)
- [Commits](cucumber/cucumber-ruby@v3.2.0...v6.1.0)

---
updated-dependencies:
- dependency-name: cucumber
  dependency-type: direct:production
...

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

Author: dependabot[bot]

cucumber-rails.gemspec

@@ -22,7 +22,7 @@ Gem::Specification.new do |s|
   }
 
   s.add_runtime_dependency('capybara', ['>= 2.18', '< 4']) # We support legacy capybara (But only the last 2.x)
-  s.add_runtime_dependency('cucumber', ['>= 3.2', '< 8']) # Support cucumber in the 3.x <-> 7.x revision range
+  s.add_runtime_dependency('cucumber', '>= 3.2', '< 9') # Support cucumber in the 3.x <-> 7.x revision range
   s.add_runtime_dependency('mime-types', ['~> 3.3']) # Only support the latest major (3+ years old)
   s.add_runtime_dependency('nokogiri', '~> 1.10') # Only support the latest major (3+ years old)
   s.add_runtime_dependency('railties', ['>= 5.0', '< 8']) # We support any version of Rails in the 5.x, 6.x and 7.x series