Allow rspec-puppet 5

Author: bastelfreak

puppetlabs_spec_helper.gemspec

@@ -33,7 +33,7 @@ Gem::Specification.new do |spec|
   spec.add_runtime_dependency 'puppet-lint', '~> 4.0'
   spec.add_runtime_dependency 'puppet-syntax', '~> 4.1', '>= 4.1.1'
   spec.add_runtime_dependency 'rspec-github', '~> 2.0'
-  spec.add_runtime_dependency 'rspec-puppet', '~> 4.0'
+  spec.add_runtime_dependency 'rspec-puppet', '>= 4.0', '< 6'
 
   spec.add_development_dependency 'voxpupuli-rubocop', '~> 2.8.0'