updated liquid to latest, patched version, 10.20.1

[bzerangue]

@chriskehayias - I updated the version of LiquidJS to the latest version which has serveral bug fixes from the last few versions released...

Bug Fixes from 10.20.1

• break/continue stops whole template, {% break %} inside for loop stops template execution harttle/liquidjs#783 (5f1a4cf)
• enumerate plain objects in where/where_exp, group_by_exp fails with object as input harttle/liquidjs#785 (fix: enumerate plain objects in where/where_exp, #785 harttle/liquidjs#788) (25ef104)
• preserveTimezones support for RFC2822 date, preserveTimezones has no effect harttle/liquidjs#784 (59cf3c0)

Feature Updates from 10.20.0

• size, first, last support arraylike objects, String values should evaluate "first" and "last" harttle/liquidjs#781 (35a8442)
• static variable analysis (feat: static variable analysis harttle/liquidjs#770) (3492ff6)

Bug Fixes from 10.19.1

• add sideEffects=false to package.json (734eb52)
• inconsistent continue behaviour, fixes Inconsistent {% continue %} Behavior in Snippets Between Shopify Liquid and LiquidJS harttle/liquidjs#779 (e3ef574)
• memoryLimit doesn't work in for tag, memoryLimit doesn't work in for tag harttle/liquidjs#776 (2af297f)