change rails gem version

Author: rubywarlock

Gemfile

@@ -8,7 +8,7 @@ git_source(:github) do |repo_name|
 end
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-gem 'rails', '~> 5.1.3'
+gem 'rails', '~> 5.1.6.2'
 # Use sqlite3 as the database for Active Record
 # Use Puma as the app server
 gem 'puma', '~> 3.7'