Fix test using Ruby 2.7 positional arguments
Fix test using Ruby 2.7 positional arguments

This was originally fixed in 12537f64176aeea8b0e528520dadfb89f6cb325e
but was accidentally undone in d28a941f9cf5a6ed6a61693ae86234c6734f676d.

Shopify/liquid-c,Shopify/liquid-c