Bump rails-assets-highlightjs

Gemfile

@@ -95,7 +95,7 @@ source "https://rails-assets.org" do
   gem "rails-assets-jquery",                              "3.2.1" # Should be kept in sync with jquery-rails
   gem "rails-assets-jquery.ui",                           "1.11.4"
 
-  gem "rails-assets-highlightjs",                         "9.9.0"
+  gem "rails-assets-highlightjs",                         "9.12.0"
   gem "rails-assets-markdown-it",                         "8.3.0"
   gem "rails-assets-markdown-it-hashtag",                 "0.4.0"
   gem "rails-assets-markdown-it-diaspora-mention",        "1.2.0"

Gemfile.lock

@@ -518,7 +518,7 @@ GEM
     rails-assets-emojione (2.0.1)
     rails-assets-favico.js (0.3.10)
     rails-assets-fine-uploader (5.13.0)
-    rails-assets-highlightjs (9.9.0)
+    rails-assets-highlightjs (9.12.0)
     rails-assets-jasmine (2.6.4)
     rails-assets-jasmine-ajax (3.3.1)
       rails-assets-jasmine (~> 2)
@@ -843,7 +843,7 @@ DEPENDENCIES
   rails-assets-corejs-typeahead (= 1.1.1)!
   rails-assets-diaspora_jsxc (= 0.1.5.develop.7)!
   rails-assets-fine-uploader (= 5.13.0)!
-  rails-assets-highlightjs (= 9.9.0)!
+  rails-assets-highlightjs (= 9.12.0)!
   rails-assets-jasmine-ajax (= 3.3.1)!
   rails-assets-jquery (= 3.2.1)!
   rails-assets-jquery-placeholder (= 2.3.1)!