added promo string to ftl & updated deps

app/ui/body.js

@@ -10,7 +10,6 @@ function banner(state) {
   const show =
     !state.capabilities.standalone &&
     !/firefox/i.test(navigator.userAgent) &&
-    document.querySelector('html').lang.startsWith('en') &&
     !state.route.startsWith('/unsupported/');
   if (show) {
     return state.cache(Promo, 'promo').render();