Update dependency np to v5.2.1 (#239)

Author: renovate-bot

package.json

@@ -48,7 +48,7 @@
     "builtins": "2.0.1",
     "husky": "3.1.0",
     "lint-staged": "9.5.0",
-    "np": "5.1.3",
+    "np": "5.2.1",
     "npm-run-all": "4.1.5",
     "prettier": "1.19.1",
     "rimraf": "3.0.0",