Bump rouge gem version to 3.26.0

Gemfile

@@ -160,7 +160,7 @@ gem 'asciidoctor', '~> 2.0.10'
 gem 'asciidoctor-include-ext', '~> 0.3.1', require: false
 gem 'asciidoctor-plantuml', '~> 0.0.12'
 gem 'asciidoctor-kroki', '~> 0.2.2', require: false
-gem 'rouge', '~> 3.25.0'
+gem 'rouge', '~> 3.26.0'
 gem 'truncato', '~> 0.7.11'
 gem 'bootstrap_form', '~> 4.2.0'
 gem 'nokogiri', '~> 1.10.9'

Gemfile.lock

@@ -986,7 +986,7 @@ GEM
     rexml (3.2.4)
     rinku (2.0.0)
     rotp (2.1.2)
-    rouge (3.25.0)
+    rouge (3.26.0)
     rqrcode (0.7.0)
       chunky_png
     rqrcode-rails3 (0.1.7)
@@ -1481,7 +1481,7 @@ DEPENDENCIES
   request_store (~> 1.5)
   responders (~> 3.0)
   retriable (~> 3.1.2)
-  rouge (~> 3.25.0)
+  rouge (~> 3.26.0)
   rqrcode-rails3 (~> 0.1.7)
   rspec-parameterized
   rspec-rails (~> 4.0.0)