chore: Use node 10 to build handlebars
chore: Use node 10 to build handlebars

Node 10 is LTS now...

wycats/handlebars.js,handlebars-lang/handlebars.js,wycats/handlebars.js,jbboehr/handlebars.js,gautamkrishnar/handlebars.js,gautamkrishnar/handlebars.js,handlebars-lang/handlebars.js,mosoft521/handlebars.js,mosoft521/handlebars.js,wycats/handlebars.js,mosoft521/handlebars.js,jbboehr/handlebars.js,wycats/handlebars.js,mosoft521/handlebars.js,jbboehr/handlebars.js,handlebars-lang/handlebars.js,gautamkrishnar/handlebars.js,handlebars-lang/handlebars.js,handlebars-lang/handlebars.js,wycats/handlebars.js,mosoft521/handlebars.js