Update Redcarpet to 3.1.2

This version fixes an API breakage between 3.0 and 3.1 ; the header
method's arity should not have changed.

[ci skip]

1 files changed, 1 insertions, 1 deletions

diff --git a/Gemfile b/Gemfile
index 0e7c6dc755..57b8bfca1e 100644
--- a/Gemfile
+++ b/Gemfile
@@ -25,7 +25,7 @@ gem 'uglifier', '>= 1.3.0', require: false
 
 group :doc do
   gem 'sdoc', '~> 0.4.0'
-  gem 'redcarpet', '~> 3.1.0', platforms: :ruby
+  gem 'redcarpet', '~> 3.1.2', platforms: :ruby
   gem 'w3c_validators'
   gem 'kindlerb'
 end