Bump np from 5.2.1 to 6.0.0 (#129)

Bumps [np](https://github.com/sindresorhus/np) from 5.2.1 to 6.0.0.
- [Release notes](https://github.com/sindresorhus/np/releases)
- [Commits](sindresorhus/np@v5.2.1...v6.0.0)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -60,7 +60,7 @@
     "father": "^2.13.2",
     "jsonp": "^0.2.0",
     "less": "^3.10.3",
-    "np": "^5.0.3",
+    "np": "^6.0.0",
     "pre-commit": "^1.2.2",
     "querystring": "^0.2.0",
     "rc-test": "^6.0.1",