Update meta_request to version 0.6.0

Gemfile.lock

@@ -177,10 +177,10 @@ GEM
       nokogiri (>= 1.5.9)
     mail (2.7.0)
       mini_mime (>= 0.1.1)
-    meta_request (0.3.4)
+    meta_request (0.6.0)
       callsite (~> 0.0, >= 0.0.11)
-      rack-contrib (~> 1.1)
-      railties (>= 3.0.0, < 5.0.0)
+      rack-contrib (>= 1.1, < 3)
+      railties (>= 3.0.0, < 6)
     method_source (0.9.0)
     mime-types (3.1)
       mime-types-data (~> 3.2015)
@@ -269,8 +269,8 @@ GEM
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
     rack (1.6.10)
-    rack-contrib (1.2.0)
-      rack (>= 0.9.1)
+    rack-contrib (1.8.0)
+      rack (~> 1.4)
     rack-ssl (1.4.1)
       rack
     rack-ssl-enforcer (0.2.9)