Update dev-dependencies

Author: wooorm

package.json

@@ -27,15 +27,14 @@
   "files": [
     "index.js"
   ],
-  "dependencies": {},
   "devDependencies": {
     "nyc": "^15.0.0",
     "prettier": "^2.0.0",
     "remark-cli": "^9.0.0",
     "remark-preset-wooorm": "^8.0.0",
     "tape": "^5.0.0",
     "unist-builder": "^2.0.0",
-    "xo": "^0.35.0"
+    "xo": "^0.38.0"
   },
   "scripts": {
     "format": "remark . -qfo && prettier . --write --loglevel warn && xo --fix",