Update nokogiri (and related dependencies).

Gemfile

@@ -10,7 +10,7 @@ gem 'rails-api'
 
 gem 'faraday'
 
-gem 'nokogiri'
+gem 'nokogiri', '>= 1.7.1'
 
 gem 'dor-rights-auth', '>= 1.3.0' # need downloadable methods
 

Gemfile.lock

@@ -131,14 +131,14 @@ GEM
     honeybadger (2.6.1)
     http-cookie (1.0.2)
       domain_name (~> 0.5)
-    i18n (0.7.0)
+    i18n (0.8.1)
     iso8601 (0.9.1)
     jasmine-jquery-rails (2.0.3)
     jquery-rails (4.0.5)
       rails-dom-testing (~> 1.0)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (1.8.3)
+    json (1.8.6)
     leaflet-rails (0.7.7)
     libv8 (3.16.14.13)
     listen (3.0.6)
@@ -152,15 +152,15 @@ GEM
     method_source (0.8.2)
     mime-types (2.99.2)
     mini_portile2 (2.1.0)
-    minitest (5.9.0)
+    minitest (5.10.1)
     multi_json (1.11.2)
     multipart-post (2.0.0)
     nenv (0.3.0)
     net-scp (1.2.1)
       net-ssh (>= 2.6.5)
     net-ssh (3.0.1)
     netrc (0.10.3)
-    nokogiri (1.6.8.1)
+    nokogiri (1.7.1)
       mini_portile2 (~> 2.1.0)
     notiffany (0.0.8)
       nenv (~> 0.1)
@@ -200,9 +200,9 @@ GEM
       railties (>= 3.2.11)
     rails-deprecated_sanitizer (1.0.3)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.7)
+    rails-dom-testing (1.0.8)
       activesupport (>= 4.2.0.beta, < 5.0)
-      nokogiri (~> 1.6.0)
+      nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
     rails-html-sanitizer (1.0.3)
       loofah (~> 2.0)
@@ -285,10 +285,10 @@ GEM
       libv8 (~> 3.16.14.0)
       ref
     thor (0.19.1)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (2.0.1)
     tins (1.6.0)
-    tzinfo (1.2.2)
+    tzinfo (1.2.3)
       thread_safe (~> 0.1)
     uglifier (3.0.0)
       execjs (>= 0.3.0, < 3)
@@ -328,7 +328,7 @@ DEPENDENCIES
   jasmine-jquery-rails
   jquery-rails
   leaflet-rails
-  nokogiri
+  nokogiri (>= 1.7.1)
   okcomputer
   poltergeist
   pry-byebug
@@ -344,4 +344,4 @@ DEPENDENCIES
   uglifier
 
 BUNDLED WITH
-   1.13.1
+   1.14.4