chore(package): update proxyquire to version 2.0.0 (#33)

Author: greenkeeper[bot]

handwritten/logging-bunyan/package.json

@@ -100,7 +100,7 @@
     "pify": "^3.0.0",
     "power-assert": "^1.4.4",
     "prettier": "^1.7.4",
-    "proxyquire": "^1.7.11",
+    "proxyquire": "^2.0.0",
     "rimraf": "^2.6.2",
     "tmp": "0.0.33"
   }