Bump activesupport

Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: http://rubygems.org/
   specs:
-    activesupport (5.1.2)
+    activesupport (5.1.4)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (~> 0.7)
       minitest (~> 5.1)
@@ -38,7 +38,8 @@ GEM
     highline (1.7.8)
     http-cookie (1.0.3)
       domain_name (~> 0.5)
-    i18n (0.8.4)
+    i18n (0.9.1)
+      concurrent-ruby (~> 1.0)
     jeweler (2.3.5)
       builder
       bundler (>= 1.0)
@@ -65,7 +66,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
     mini_portile2 (2.1.0)
-    minitest (5.10.2)
+    minitest (5.10.3)
     multi_json (1.12.1)
     multi_xml (0.6.0)
     multipart-post (2.0.0)
@@ -114,7 +115,7 @@ GEM
     thor (0.19.4)
     thread_safe (0.3.6)
     tins (1.15.0)
-    tzinfo (1.2.3)
+    tzinfo (1.2.4)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext
@@ -140,4 +141,4 @@ DEPENDENCIES
   yard
 
 BUNDLED WITH
-   1.15.1
+   1.16.0