Set Node to v14

To accommodate libsass, and make this deployable to Heroku, we need to stay at v14 of node.

We can upgrade the node version once we update ember-styleguide.

Author: jenweber

package.json

@@ -136,7 +136,7 @@
     "typescript": "^4.9.3"
   },
   "engines": {
-    "node": "14.* || 16.* || 18.*",
+    "node": "14.*",
     "npm": "7 || 8 || 9"
   },
   "cacheDirectories": [