Replace i18n with tpl in api/v3/pages-public.js (#13586)
Replace i18n with tpl in api/v3/pages-public.js (#13586)

refs: #13380

- The i18n package is deprecated. It is being replaced with the tpl package.
TryGhost/Ghost,ErisDS/Ghost,TryGhost/Ghost,janvt/Ghost,ErisDS/Ghost,ErisDS/Ghost,e10/Ghost,e10/Ghost,janvt/Ghost,TryGhost/Ghost