Update dependency xo to v0.38.2

Author: renovate-bot

package.json

@@ -103,7 +103,7 @@
     "np": "7.4.0",
     "nyc": "15.1.0",
     "power-assert": "1.6.1",
-    "xo": "0.36.1"
+    "xo": "0.38.2"
   },
   "files": [
     "lib"