chore(package): update sinon to version 5.0.0

Author: greenkeeper[bot]

package.json

@@ -74,6 +74,6 @@
     "np": "^2.13.2",
     "npm-run-all": "^4.0.2",
     "should": "^13.0.1",
-    "sinon": "^4.0.0"
+    "sinon": "^5.0.0"
   }
 }