address security concerns from github regarding gem versions

Author: ianfixes

CHANGELOG.md

@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Fixed
 - Built gems are `.gitignore`d
+- Updated gems based on Github's security advisories
 
 ### Security
 

arduino_ci.gemspec

@@ -22,6 +22,6 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency "bundler", "~> 1.15"
   spec.add_development_dependency "rspec", "~> 3.0"
-  spec.add_development_dependency 'rubocop', '~> 0', '>= 0.46.0'
-  spec.add_development_dependency 'yard', '~>0.8', '>= 0.8'
+  spec.add_development_dependency 'rubocop', '~>0.49.0'
+  spec.add_development_dependency 'yard', '~>0.9.11'
 end