Use markdown DEFAULT_ENGINE

app/models/concerns/cache_markdown_field.rb

@@ -40,7 +40,7 @@ def banzai_render_context(field)
     # Banzai is less strict about authors, so don't always have an author key
     context[:author] = self.author if self.respond_to?(:author)
 
-    context[:markdown_engine] = :common_mark
+    context[:markdown_engine] = Banzai::Filter::MarkdownFilter::DEFAULT_ENGINE
 
     if Feature.enabled?(:personal_snippet_reference_filters, context[:author])
       context[:user] = self.parent_user