chore(package): update rimraf to version 3.0.0

Author: greenkeeper[bot]

package.json

@@ -69,7 +69,7 @@
     "fetch-mock": "^6.5.0",
     "husky": "^0.14.3",
     "nyc": "^12.0.2",
-    "rimraf": "^2.6.2",
+    "rimraf": "^3.0.0",
     "sinon": "^6.1.3",
     "validate-commit-msg": "^2.14.0"
   },