Update rubocop-rspec requirement from ~> 2.25.0 to ~> 2.29.2

Updates the requirements on [rubocop-rspec](https://github.com/rubocop/rubocop-rspec) to permit the latest version.
- [Release notes](https://github.com/rubocop/rubocop-rspec/releases)
- [Changelog](https://github.com/rubocop/rubocop-rspec/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-rspec@v2.25.0...v2.29.2)

---
updated-dependencies:
- dependency-name: rubocop-rspec
  dependency-type: direct:development
...

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

site_prism.gemspec

@@ -31,7 +31,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'rspec', '~> 3.12'
   s.add_development_dependency 'rubocop', '~> 1.63.0'
   s.add_development_dependency 'rubocop-performance', '~> 1.21.0'
-  s.add_development_dependency 'rubocop-rspec', '~> 2.25.0'
+  s.add_development_dependency 'rubocop-rspec', '~> 2.29.2'
   s.add_development_dependency 'selenium-webdriver', '~> 4.7'
   s.add_development_dependency 'simplecov', '~> 0.21'
   s.add_development_dependency 'webdrivers', '~> 5.3'