Update Gemfile.lock (#382)

Author: Christopher Goddard

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    zendesk_apps_tools (3.8.7)
+    zendesk_apps_tools (3.8.8)
       execjs (~> 2.7.0)
       faraday (~> 0.9.2)
       faye-websocket (>= 0.10.7, < 0.12.0)
@@ -32,7 +32,7 @@ GEM
     celluloid (0.16.0)
       timers (~> 4.0.0)
     childprocess (3.0.0)
-    concurrent-ruby (1.1.9)
+    concurrent-ruby (1.1.10)
     contracts (0.16.0)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
@@ -80,12 +80,12 @@ GEM
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     marcel (1.0.2)
-    mini_portile2 (2.7.1)
+    mini_portile2 (2.8.0)
     multi_json (1.14.1)
     multi_test (0.1.2)
     multipart-post (2.1.1)
-    nokogiri (1.13.1)
-      mini_portile2 (~> 2.7.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     public_suffix (4.0.6)
     racc (1.6.0)
@@ -111,7 +111,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.9.0)
     rspec-support (3.9.2)
-    rubyzip (1.3.0)
+    rubyzip (2.3.2)
     safe_yaml (1.0.5)
     sass (3.7.4)
       sass-listen (~> 4.0.0)