chore(deps): update dependency nyc to ^13.3.0 (#36)

Author: renovate[bot]

package.json

@@ -115,7 +115,7 @@
     "lodash": "^4.17.11",
     "mkdirp": "^0.5.1",
     "mocha": "^6.1.4",
-    "nyc": "^13.1.0",
+    "nyc": "^13.3.0",
     "parcel-bundler": "^1.11.0",
     "prettier": "^1.18.2",
     "sinon": "^7.2.5",