Merge pull request #427 from alphagov/middleman-syntax

Lock middleman-syntax to v3.6+

Author: levgorbunov1

govuk_tech_docs.gemspec

@@ -48,7 +48,7 @@ Gem::Specification.new do |spec|
   spec.add_dependency "middleman-livereload"
   spec.add_dependency "middleman-search-gds"
   spec.add_dependency "middleman-sprockets", "~> 4.0.0"
-  spec.add_dependency "middleman-syntax", "~> 3.4"
+  spec.add_dependency "middleman-syntax", "~> 3.6"
   spec.add_dependency "mutex_m" # TODO: remove once activesupport declares this itself.
   spec.add_dependency "nokogiri"
   spec.add_dependency "openapi3_parser", "~> 0.9.0"