lower engine restriction to node >=10.x

Author: zerobias

Diff for: buildspec.yml

@@ -3,7 +3,7 @@ version: 0.2
 phases:
   install:
     runtime-versions:
-      nodejs: 12
+      nodejs: 10
     commands:
       - cd website/editor
       - yarn

Diff for: package.json

@@ -38,6 +38,8 @@
     "last 2 Firefox versions",
     "last 2 Safari versions"
   ],
-  "engines": { "node": "12.x" },
+  "engines": {
+    "node": ">=10.x"
+  },
   "license": "MIT"
 }