Bump nokogiri from 1.6.6.2 to 1.9.1

Gemfile.lock

@@ -59,16 +59,17 @@ GEM
     arel (6.0.3)
     arrayfields (4.9.2)
     ast (2.1.0)
-    builder (3.2.2)
+    builder (3.2.4)
     byebug (6.0.2)
     cane (2.6.2)
       parallel
-    capybara (2.4.4)
-      mime-types (>= 1.16)
+    capybara (2.18.0)
+      addressable
+      mini_mime (>= 0.1.3)
       nokogiri (>= 1.3.3)
       rack (>= 1.0.0)
       rack-test (>= 0.5.4)
-      xpath (~> 2.0)
+      xpath (>= 2.0, < 4.0)
     chronic (0.10.2)
     churn (0.0.35)
       chronic (>= 0.2.3)
@@ -86,6 +87,8 @@ GEM
     concord (0.1.5)
       adamantium (~> 0.2.0)
       equalizer (~> 0.0.9)
+    concurrent-ruby (1.1.8)
+    crass (1.0.6)
     cucumber (1.3.20)
       builder (>= 2.1.2)
       diff-lcs (>= 1.1.3)
@@ -131,19 +134,21 @@ GEM
     hirb (0.7.3)
     http-cookie (1.0.2)
       domain_name (~> 0.5)
-    i18n (0.7.0)
+    i18n (0.9.5)
+      concurrent-ruby (~> 1.0)
     ice_nine (0.11.1)
     jquery-rails (4.0.4)
       rails-dom-testing (~> 1.0)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
     jquery-ui-rails (5.0.5)
       railties (>= 3.2.16)
-    json (1.8.3)
+    json (1.8.6)
     json_pure (1.8.2)
     launchy (2.4.3)
       addressable (~> 2.3)
-    loofah (2.0.3)
+    loofah (2.9.1)
+      crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
@@ -179,25 +184,26 @@ GEM
       reek (>= 1.3.4, < 3.0)
       roodi (~> 3.1)
     metric_fu-Saikuro (1.1.3)
-    mime-types (2.6.1)
-    mini_portile (0.6.2)
-    minitest (5.8.0)
+    mime-types (2.99.3)
+    mini_mime (1.1.0)
+    mini_portile2 (2.4.0)
+    minitest (5.14.4)
     multi_json (1.11.2)
     multi_test (0.1.2)
     multipart-post (2.0.0)
     net-http-digest_auth (1.4)
     net-http-persistent (2.9.4)
     netrc (0.10.3)
-    nokogiri (1.6.6.2)
-      mini_portile (~> 0.6.0)
+    nokogiri (1.9.1)
+      mini_portile2 (~> 2.4.0)
     ntlm-http (0.1.1)
     octokit (4.1.0)
       sawyer (~> 0.6.0, >= 0.5.3)
     parallel (1.6.1)
     parser (2.2.2.6)
       ast (>= 1.1, < 3.0)
     procto (0.0.2)
-    rack (1.6.4)
+    rack (1.6.13)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (4.2.3)
@@ -211,14 +217,14 @@ GEM
       bundler (>= 1.3.0, < 2.0)
       railties (= 4.2.3)
       sprockets-rails
-    rails-deprecated_sanitizer (1.0.3)
+    rails-deprecated_sanitizer (1.0.4)
       activesupport (>= 4.2.0.alpha)
-    rails-dom-testing (1.0.7)
-      activesupport (>= 4.2.0.beta, < 5.0)
-      nokogiri (~> 1.6.0)
+    rails-dom-testing (1.0.9)
+      activesupport (>= 4.2.0, < 5.0)
+      nokogiri (~> 1.6)
       rails-deprecated_sanitizer (>= 1.0.1)
-    rails-html-sanitizer (1.0.2)
-      loofah (~> 2.0)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
     rails-observers (0.1.2)
       activemodel (~> 4.0)
     rails_best_practices (1.15.7)
@@ -300,11 +306,11 @@ GEM
     term-ansicolor (1.3.2)
       tins (~> 1.0)
     thor (0.19.1)
-    thread_safe (0.3.5)
+    thread_safe (0.3.6)
     tilt (2.0.1)
     timecop (0.8.0)
     tins (1.6.0)
-    tzinfo (1.2.2)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext
@@ -318,8 +324,8 @@ GEM
       parser (~> 2.2.2)
       procto (~> 0.0.2)
     webrobots (0.1.1)
-    xpath (2.0.0)
-      nokogiri (~> 1.3)
+    xpath (3.1.0)
+      nokogiri (~> 1.8)
 
 PLATFORMS
   ruby