Update dev-dependencies

Author: wooorm

package.json

@@ -37,7 +37,7 @@
     "remark-preset-wooorm": "^8.0.0",
     "tape": "^5.0.0",
     "tinyify": "^3.0.0",
-    "xo": "^0.34.0"
+    "xo": "^0.38.0"
   },
   "scripts": {
     "format": "remark . -qfo && prettier . -w --loglevel warn && xo --fix",