Update rake version

Author: tiagopog

jsonapi-utils.gemspec

@@ -22,7 +22,7 @@ Gem::Specification.new do |spec|
  spec.add_runtime_dependency 'jsonapi-resources', '0.9.8'
 
  spec.add_development_dependency 'bundler', '~> 1.10'
- spec.add_development_dependency 'rake', '~> 10.0'
+ spec.add_development_dependency 'rake', '~> 12.3.3'
  spec.add_development_dependency 'rails', ENV['RAILS_VERSION'] || '~> 5.1'
  spec.add_development_dependency 'sqlite3', '~> 1.3.6'
  spec.add_development_dependency 'rspec-rails', '~> 3.1'