/usr/lib/ruby/vendor_ruby/ is in ruby-liquid 2.6.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/liquid.rb
/usr/lib/ruby/vendor_ruby/liquid/
/usr/lib/ruby/vendor_ruby/liquid/template.rb
/usr/lib/ruby/vendor_ruby/liquid/context.rb
/usr/lib/ruby/vendor_ruby/liquid/module_ex.rb
/usr/lib/ruby/vendor_ruby/liquid/errors.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/
/usr/lib/ruby/vendor_ruby/liquid/tags/if.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/ifchanged.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/case.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/raw.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/include.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/break.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/comment.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/continue.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/increment.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/decrement.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/cycle.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/assign.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/unless.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/for.rb
/usr/lib/ruby/vendor_ruby/liquid/tags/capture.rb
/usr/lib/ruby/vendor_ruby/liquid/drop.rb
/usr/lib/ruby/vendor_ruby/liquid/htmltags.rb
/usr/lib/ruby/vendor_ruby/liquid/version.rb
/usr/lib/ruby/vendor_ruby/liquid/utils.rb
/usr/lib/ruby/vendor_ruby/liquid/tag.rb
/usr/lib/ruby/vendor_ruby/liquid/extensions.rb
/usr/lib/ruby/vendor_ruby/liquid/file_system.rb
/usr/lib/ruby/vendor_ruby/liquid/interrupts.rb
/usr/lib/ruby/vendor_ruby/liquid/standardfilters.rb
/usr/lib/ruby/vendor_ruby/liquid/variable.rb
/usr/lib/ruby/vendor_ruby/liquid/condition.rb
/usr/lib/ruby/vendor_ruby/liquid/block.rb
/usr/lib/ruby/vendor_ruby/liquid/strainer.rb
/usr/lib/ruby/vendor_ruby/liquid/document.rb
/usr/lib/ruby/vendor_ruby/extras/
/usr/lib/ruby/vendor_ruby/extras/liquid_view.rb