chore(package): update dependencies (#24)

https://greenkeeper.io/

Author: greenkeeperio-bot

Diff for: package.json

@@ -29,9 +29,9 @@
     "chai": "^3.5.0",
     "coveralls": "^2.11.12",
     "mocha": "^3.1.2",
-    "nyc": "^8.4.0",
+    "nyc": "^10.1.2",
     "standard": "^8.5.0",
-    "standard-version": "^3.0.0"
+    "standard-version": "^4.0.0"
   },
   "dependencies": {
     "arrify": "^1.0.1",
@@ -50,5 +50,10 @@
       "lcov",
       "text"
     ]
+  },
+  "greenkeeper": {
+    "ignore": [
+      "read-pkg-up"
+    ]
   }
 }