Fixed mini_racer problem

Gemfile

@@ -2,8 +2,6 @@ source 'https://rubygems.org'
 # gem 'github-pages', group: :jekyll_plugins
 gem 'activesupport'
 gem "actionview", ">= 5.2.4.2"
-gem 'libv8-node'
-gem 'mini_racer', "< 0.7.0"
 # gem 'github-pages-health-check'
 gem 'html-proofer', group: :development
 gem 'jekyll', '~> 4.2'
@@ -44,3 +42,5 @@ gem 'nokogiri', '>= 1.10.4'
 gem 'loofah', '>= 2.3.1'
 # gem 'ruby-oembed'
 gem 'terminal-table'
+
+gem "mini_racer", "~> 0.6.2"

Gemfile.lock

@@ -253,12 +253,11 @@ DEPENDENCIES
   jekyll-toc
   jemoji
   kramdown
-  libv8-node
   liquid
   listen
   loofah (>= 2.3.1)
   mercenary
-  mini_racer (< 0.7.0)
+  mini_racer (~> 0.6.2)
   minima
   nokogiri (>= 1.10.4)
   rack (~> 2.2.3)
@@ -269,4 +268,4 @@ DEPENDENCIES
   terminal-table
 
 BUNDLED WITH
-   1.17.3
+   2.3.8