fix: node.js compatibility claim in package.json

Author: boris-petrov

package.json

@@ -110,7 +110,7 @@
     "@types/jquery": "^3.3.10"
   },
   "engines": {
-    "node": "^4.5 || 6.* || >= 7.*"
+    "node": "6.* || 8.* || >= 10.*"
   },
   "ember-addon": {
     "configPath": "tests/dummy/config",