Update xo

Author: wooorm

package.json

@@ -64,7 +64,7 @@
     "tsd": "^0.17.0",
     "type-coverage": "^2.0.0",
     "typescript": "^4.0.0",
-    "xo": "^0.39.0"
+    "xo": "^0.42.0"
   },
   "scripts": {
     "prepack": "npm run build && npm run format",

test.js

@@ -4,7 +4,7 @@
  * @typedef {import('unist').Parent} Parent
  */
 
-import assert from 'assert'
+import assert from 'node:assert'
 import test from 'tape'
 import remark from 'remark'
 import gfm from 'remark-gfm'