Merge pull request #4 from btc-raspberrypiclub/bundler-security-update

Update bundler dependency

Author: eamonburns

jekyll-theme-cleaner-blog.gemspec

@@ -15,6 +15,6 @@ Gem::Specification.new do |spec|
   # TODO: Might be outdated
   spec.add_runtime_dependency 'jekyll', '>= 3.8.5'
 
-  spec.add_development_dependency 'bundler', '~> 2.0.1'
+  spec.add_development_dependency 'bundler', '~> 2.2.10'
   spec.add_development_dependency 'rake', '~> 12.0'
 end