Merge branch '36787-upgrade-commonmarker-gem-to-0-20-1' into 'master'

Upgrade `commonmarker` gem to `0.20.1`

See merge request gitlab-org/gitlab!20418

Gemfile

@@ -139,7 +139,7 @@ gem 'html-pipeline', '~> 2.8'
 gem 'deckar01-task_list', '2.2.1'
 gem 'gitlab-markup', '~> 1.7.0'
 gem 'github-markup', '~> 1.7.0', require: 'github/markup'
-gem 'commonmarker', '~> 0.17'
+gem 'commonmarker', '~> 0.20'
 gem 'RedCloth', '~> 4.3.2'
 gem 'rdoc', '~> 6.0'
 gem 'org-ruby', '~> 0.9.12'

Gemfile.lock

@@ -157,7 +157,7 @@ GEM
     coercible (1.0.0)
       descendants_tracker (~> 0.0.1)
     colored2 (3.1.2)
-    commonmarker (0.17.13)
+    commonmarker (0.20.1)
       ruby-enum (~> 0.5)
     concord (0.1.5)
       adamantium (~> 0.2.0)
@@ -1146,7 +1146,7 @@ DEPENDENCIES
   carrierwave (~> 1.3)
   charlock_holmes (~> 0.7.5)
   chronic (~> 0.10.2)
-  commonmarker (~> 0.17)
+  commonmarker (~> 0.20)
   concurrent-ruby (~> 1.1)
   connection_pool (~> 2.0)
   countries (~> 3.0)

lib/banzai/filter/markdown_engines/common_mark.rb

@@ -29,7 +29,9 @@ module Banzai
         # If in the future the syntax is about to be made GitHub-compatible, please, add `:GITHUB_PRE_LANG` render option below
         # and remove `code_block` method from `lib/banzai/renderer/common_mark/html.rb`.
         RENDER_OPTIONS = [
-          :DEFAULT # default rendering system. Nothing special.
+          # as of commonmarker 0.18.0, we need to use :UNSAFE to get the same as the original :DEFAULT
+          # https://github.com/gjtorikian/commonmarker/pull/81
+          :UNSAFE
         ].freeze
 
         RENDER_OPTIONS_SOURCEPOS = RENDER_OPTIONS + [