Update dependency np to v7

Author: renovate-bot

package.json

@@ -91,7 +91,7 @@
     "esdoc-inject-script-plugin": "1.0.0",
     "esdoc-inject-style-plugin": "1.0.0",
     "esdoc-standard-plugin": "1.0.0",
-    "np": "6.5.0",
+    "np": "7.0.0",
     "nyc": "15.1.0",
     "power-assert": "1.6.1",
     "regenerator-runtime": "0.13.7",