feat(rule): upgrade default ruleset to nodejs/v10 (up from v6)

BREAKING CHANGE:

Author: robertrossmann

default.js

@@ -2,8 +2,7 @@
 
 module.exports = {
   extends: [
-    // @TODO(breaking): Bump to latest node.js ruleset on next major release
-    './environments/nodejs/v6.js',
+    './environments/nodejs/v10.js',
     './environments/nodejs/optional.js',
     './coding-styles/recommended.js',
   ],