Update mini_racer

Author: Vidas P

Gemfile

@@ -27,7 +27,7 @@ gem 'omniauth-37signals' # BasecampAgent
 gem 'ace-rails-ap', '~> 4.2'
 gem 'bootsnap', '>= 1.4.6', require: false
 gem 'execjs', '~> 2.7.0'
-gem 'mini_racer', '~> 0.2.8'
+gem 'mini_racer', '~> 0.2.15'
 gem 'bootstrap', '~> 4.5.0'
 gem 'daemons', '~> 1.2.6'
 gem 'delayed_job', '~> 4.1.8'

Gemfile.lock

@@ -322,7 +322,7 @@ GEM
     mini_magick (4.9.5)
     mini_mime (1.0.2)
     mini_portile2 (2.4.0)
-    mini_racer (0.2.10)
+    mini_racer (0.2.15)
       libv8 (> 7.3)
     minitest (5.14.1)
     msgpack (1.3.3)
@@ -633,7 +633,7 @@ DEPENDENCIES
   liquid (~> 4.0.3)
   loofah (~> 2.5.0)
   mini_magick (~> 4.9.5)
-  mini_racer (~> 0.2.8)
+  mini_racer (~> 0.2.15)
   net-ftp-list (~> 3.2.8)
   nokogiri (~> 1.10.8)
   omniauth (~> 1.9.0)