update np

Author: ds300

package.json

@@ -58,7 +58,7 @@
     "husky": "^1.3.1",
     "jest": "^24.5.0",
     "lint-staged": "^8.1.5",
-    "np": "^4.0.2",
+    "np": "^6.2.0",
     "prettier": "^1.18.2",
     "randomstring": "^1.1.5",
     "ts-jest": "^24.0.0",