Upgrading gitlab-gollum-lib and rouge

Gemfile

@@ -140,7 +140,7 @@ gem 'creole', '~> 0.5.0'
 gem 'wikicloth', '0.8.1'
 gem 'asciidoctor', '~> 1.5.6'
 gem 'asciidoctor-plantuml', '0.0.8'
-gem 'rouge', '~> 2.0'
+gem 'rouge', '~> 3.1'
 gem 'truncato', '~> 0.7.9'
 gem 'bootstrap_form', '~> 2.7.0'
 gem 'nokogiri', '~> 1.8.2'

Gemfile.lock

@@ -303,12 +303,12 @@ GEM
       flowdock (~> 0.7)
       gitlab-grit (>= 2.4.1)
       multi_json
-    gitlab-gollum-lib (4.2.7.1)
+    gitlab-gollum-lib (4.2.7.2)
       gemojione (~> 3.2)
       github-markup (~> 1.6)
       gollum-grit_adapter (~> 1.0)
       nokogiri (>= 1.6.1, < 2.0)
-      rouge (~> 2.1)
+      rouge (~> 3.1)
       sanitize (~> 2.1)
       stringex (~> 2.6)
     gitlab-gollum-rugged_adapter (0.4.4)
@@ -747,7 +747,7 @@ GEM
     retriable (3.1.1)
     rinku (2.0.0)
     rotp (2.1.2)
-    rouge (2.2.1)
+    rouge (3.1.1)
     rqrcode (0.7.0)
       chunky_png
     rqrcode-rails3 (0.1.7)
@@ -1160,7 +1160,7 @@ DEPENDENCIES
   redis-rails (~> 5.0.2)
   request_store (~> 1.3)
   responders (~> 2.0)
-  rouge (~> 2.0)
+  rouge (~> 3.1)
   rqrcode-rails3 (~> 0.1.7)
   rspec-parameterized
   rspec-rails (~> 3.6.0)