Update dependency nyc to v17

Author: renovate[bot]

package.json

@@ -34,7 +34,7 @@
     "axios": "0.19.0",
     "coveralls": "3.0.5",
     "micro-dev": "3.0.0",
-    "nyc": "14.1.1",
+    "nyc": "17.1.0",
     "standard": "13.1.0",
     "test-listen": "1.1.0"
   },