Update rspec and rspec-rails dev dependency versions

Author: valscion

jsonapi-authorization.gemspec

@@ -23,8 +23,8 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "appraisal"
   spec.add_development_dependency "bundler", ">= 1.11"
   spec.add_development_dependency "rake", "~> 12.0"
-  spec.add_development_dependency "rspec", "~> 3.8"
-  spec.add_development_dependency "rspec-rails", "~> 3.8"
+  spec.add_development_dependency "rspec", "~> 3.11"
+  spec.add_development_dependency "rspec-rails", "~> 5.1"
   spec.add_development_dependency "pry"
   spec.add_development_dependency "pry-byebug"
   spec.add_development_dependency "pry-doc"