chore(package): update nock to version 12.0.0

Closes #21

Author: greenkeeper[bot]

package.json

@@ -51,7 +51,7 @@
     "husky": "3.0.1",
     "lint-staged": "9.2.0",
     "mocha": "6.2.0",
-    "nock": "10.0.6",
+    "nock": "12.0.0",
     "node-typescript": "0.1.3",
     "nyc": "14.1.1",
     "prettier": "1.18.2",