Update rails_real_favicon

Gemfile.lock

@@ -248,7 +248,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
-    json (2.3.0)
+    json (2.7.2)
     json-schema (2.8.1)
       addressable (>= 2.4)
     json-schema-rspec (0.0.4)
@@ -398,7 +398,7 @@ GEM
     rails-html-sanitizer (1.6.0)
       loofah (~> 2.21)
       nokogiri (~> 1.14)
-    rails_real_favicon (0.1.0)
+    rails_real_favicon (0.1.1)
       json (>= 1.7, < 3)
       rails
       rubyzip (~> 2)
@@ -470,7 +470,7 @@ GEM
     ruby-vips (2.1.4)
       ffi (~> 1.12)
     ruby2_keywords (0.0.5)
-    rubyzip (2.3.0)
+    rubyzip (2.3.2)
     rufus-scheduler (3.6.0)
       fugit (~> 1.1, >= 1.1.6)
     sassc (2.4.0)