test: CI test for demos

demo/nodejs/index.js

@@ -2,7 +2,7 @@ const { Liquid, Tag, Value } = require('liquidjs')
 
 const engine = new Liquid({
   extname: '.liquid',
-  globals: { title: 'LiquidJS Demo' },
+  globals: { title: 'NodeJS Demo for LiquidJS' },
   // root files for `.render()` and `.parse()`
   root: __dirname,
   // layout files for `{% layout %}`

demo/nodejs/package.json

@@ -7,6 +7,6 @@
     "start": "node index.js"
   },
   "dependencies": {
-    "liquidjs": "^9.28.3"
+    "liquidjs": "latest"
   }
 }