😒 chore(deps-dev): Upgrade nyc.

Author: make-github-pseudonymous-again

package.json

@@ -38,7 +38,7 @@
     "codeclimate-test-reporter": "0.5.1",
     "coveralls": "2.13.3",
     "esdoc": "1.1.0",
-    "nyc": "11.9.0",
+    "nyc": "15.0.1",
     "@babel/cli": "7.8.4",
     "@babel/core": "7.9.0",
     "@babel/polyfill": "7.8.7",