use stripe 1.31.0 or more

Author: alexmamonchik

stripe-ruby-mock.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |gem|
  gem.test_files = gem.files.grep(%r{^(test|spec|features)/})
  gem.require_paths = ['lib']
 
- gem.add_dependency 'stripe', '1.31.0'
+ gem.add_dependency 'stripe', '>=1.31.0'
  gem.add_dependency 'jimson-temp'
  gem.add_dependency 'dante', '>= 0.2.0'