Bump np from 5.2.1 to 6.2.0 (#171)

Bumps [np](https://github.com/sindresorhus/np) from 5.2.1 to 6.2.0.
- [Release notes](https://github.com/sindresorhus/np/releases)
- [Commits](sindresorhus/np@v5.2.1...v6.2.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

package.json

@@ -52,7 +52,7 @@
     "enzyme-adapter-react-16": "^1.14.0",
     "enzyme-to-json": "^3.4.0",
     "father": "^2.13.2",
-    "np": "^5.0.3",
+    "np": "^6.2.0",
     "react": "^16.0.0",
     "react-dom": "^16.0.0",
     "typescript": "^3.5.2"