⬆️ deps: Upgrade dependency xo to v0.39.1

Author: renovate-bot

package.json

@@ -86,7 +86,7 @@
     "pinst": "2.1.6",
     "power-assert": "1.6.1",
     "regenerator-runtime": "0.13.7",
-    "xo": "0.38.2"
+    "xo": "0.39.1"
   },
   "ava": {
     "files": [