bump up 2.6.3.

hsbt · hsbt · commit 2bfdc390f34e · 2019-04-23T09:04:03.000+09:00
diff --git a/Gemfile b/Gemfile
@@ -1,5 +1,5 @@
 source "https://rubygems.org"
-ruby ENV['CUSTOM_RUBY_VERSION'] || '~> 2.6.2'
+ruby ENV['CUSTOM_RUBY_VERSION'] || '~> 2.6.3'
 
 gem 'rake'
 gem 'jekyll', '~> 3.0'
