Bump nokogiri

https://groups.google.com/forum/#!topic/ruby-security-ann/aSbgDiwb24s

Gemfile

@@ -135,7 +135,7 @@ gem 'rack', '~>1.4.7'
 gem 'i18n', '~> 0.6.8'
 # see https://groups.google.com/forum/#!topic/ruby-security-ann/pLrh6DUw998
 
-gem 'nokogiri', '~> 1.6.6'
+gem 'nokogiri', '~> 1.6.7'
 
 gem 'carrierwave', '~> 0.10.0'
 gem 'fog', '~> 1.23.0', require: "fog/aws/storage"

Gemfile.lock

@@ -284,7 +284,7 @@ GEM
       treetop (~> 1.4.8)
     method_source (0.8.2)
     mime-types (1.25.1)
-    mini_portile (0.6.2)
+    mini_portile2 (2.0.0)
     minisyntax (0.2.3)
     mixlib-shellout (2.1.0)
     multi_json (1.11.0)
@@ -295,8 +295,8 @@ GEM
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-ssh (2.9.2)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.6.7.1)
+      mini_portile2 (~> 2.0.0.rc2)
     non-stupid-digest-assets (1.0.4)
     object-daddy (1.1.1)
     oj (2.11.4)
@@ -535,7 +535,7 @@ DEPENDENCIES
   multi_json (~> 1.11.0)
   mysql2 (~> 0.3.11)
   net-ldap (~> 0.8.0)
-  nokogiri (~> 1.6.6)
+  nokogiri (~> 1.6.7)
   non-stupid-digest-assets
   object-daddy (~> 1.1.0)
   oj (~> 2.11.4)