Bump zas for security validations

Author: seangoedecke

Gemfile.lock

@@ -12,7 +12,7 @@ PATH
       sinatra-cross_origin (~> 0.3.1)
       thin (~> 1.7.2)
       thor (~> 0.19.4)
-      zendesk_apps_support (~> 4.21.1)
+      zendesk_apps_support (~> 4.21.2)
 
 GEM
   remote: https://rubygems.org/
@@ -62,16 +62,16 @@ GEM
     execjs (2.7.0)
     faraday (0.9.2)
       multipart-post (>= 1.2, < 3)
-    faye-websocket (0.10.7)
+    faye-websocket (0.10.9)
       eventmachine (>= 0.12.0)
       websocket-driver (>= 0.5.1)
     ffi (1.9.25)
     gherkin (4.1.3)
     hashdiff (0.3.8)
-    hitimes (1.3.0)
-    i18n (1.5.1)
+    hitimes (1.3.1)
+    i18n (1.6.0)
       concurrent-ruby (~> 1.0)
-    image_size (2.0.0)
+    image_size (2.0.2)
     ipaddress_2 (0.13.0)
     json (2.2.0)
     listen (2.10.1)
@@ -85,7 +85,7 @@ GEM
     mini_portile2 (2.3.0)
     multi_json (1.13.1)
     multi_test (0.1.2)
-    multipart-post (2.0.0)
+    multipart-post (2.1.1)
     nokogiri (1.8.5)
       mini_portile2 (~> 2.3.0)
     public_suffix (3.0.3)
@@ -111,7 +111,7 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
-    rubyzip (1.2.2)
+    rubyzip (1.2.3)
     safe_yaml (1.0.4)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -139,10 +139,10 @@ GEM
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
-    websocket-driver (0.7.0)
+    websocket-driver (0.7.1)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.3)
-    zendesk_apps_support (4.21.1)
+    websocket-extensions (0.1.4)
+    zendesk_apps_support (4.21.2)
       erubis
       i18n
       image_size

zendesk_apps_tools.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |s|
   s.add_runtime_dependency 'sinatra',     '~> 1.4.6'
   s.add_runtime_dependency 'faraday',     '~> 0.9.2'
   s.add_runtime_dependency 'execjs',      '~> 2.7.0'
-  s.add_runtime_dependency 'zendesk_apps_support', '~> 4.21.1'
+  s.add_runtime_dependency 'zendesk_apps_support', '~> 4.21.2'
   s.add_runtime_dependency 'sinatra-cross_origin', '~> 0.3.1'
   s.add_runtime_dependency 'listen', '~> 2.10'
   s.add_runtime_dependency 'rack-livereload'