Pin mini_racer to ~> 0.9.0 for Ruby 3.1 compatibility

0.20.0 (latest) fails with NoMethodError in extconf.rb on Ruby 3.1.
0.9.x explicitly supports Ruby >= 3.0 and compiles cleanly on Ubuntu 24.04.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: princejoseph

ruby/hyper-component/hyper-component.gemspec

@@ -27,7 +27,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'jquery-rails'
   spec.add_development_dependency 'listen'
   spec.add_development_dependency 'mime-types'
-  spec.add_development_dependency 'mini_racer', '>= 0.6.0' # 0.3.x fails to compile on Ubuntu 24.04; 0.6+ uses libv8-node and compiles cleanly
+  spec.add_development_dependency 'mini_racer', '~> 0.9.0' # 0.3.x fails on Ubuntu 24.04; 0.9.x uses libv8-node and works with Ruby 3.1
   spec.add_development_dependency 'nokogiri'
   spec.add_development_dependency 'opal-jquery'
   spec.add_development_dependency 'opal-rails' 

ruby/hyper-router/hyper-router.gemspec

@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'hyper-spec', HyperRouter::VERSION
   spec.add_development_dependency 'hyper-store', HyperRouter::VERSION
   spec.add_development_dependency 'listen'
-  spec.add_development_dependency 'mini_racer', '>= 0.6.0' # 0.3.x fails to compile on Ubuntu 24.04; 0.6+ uses libv8-node and compiles cleanly
+  spec.add_development_dependency 'mini_racer', '~> 0.9.0' # 0.3.x fails on Ubuntu 24.04; 0.9.x uses libv8-node and works with Ruby 3.1
   spec.add_development_dependency 'opal-rails'
   spec.add_development_dependency 'opal-jquery'
   spec.add_development_dependency 'pry-rescue'

ruby/hyper-spec/hyper-spec.gemspec

@@ -34,7 +34,7 @@ Gem::Specification.new do |spec| # rubocop:disable Metrics/BlockLength
 
   spec.add_development_dependency 'bundler'
   spec.add_development_dependency 'hyper-component', HyperSpec::VERSION
-  spec.add_development_dependency 'mini_racer', '>= 0.6.0' # 0.3.x fails to compile on Ubuntu 24.04; 0.6+ uses libv8-node and compiles cleanly
+  spec.add_development_dependency 'mini_racer', '~> 0.9.0' # 0.3.x fails on Ubuntu 24.04; 0.9.x uses libv8-node and works with Ruby 3.1
   spec.add_development_dependency 'opal-rails', '>= 0.9.4'
   spec.add_development_dependency 'pry-rescue'
   spec.add_development_dependency 'pry-stack_explorer'