chore(deps): update dependency rimraf to v3 (#1623)

Author: renovate[bot]

package.json

@@ -141,7 +141,7 @@
         "querystring": "^0.2.0",
         "raw-loader": "^1.0.0-beta.0",
         "reqwest": "^2.0.5",
-        "rimraf": "^2.6.2",
+        "rimraf": "^3.0.0",
         "rucksack-css": "^1.0.2",
         "selenium-server": "^3.0.1",
         "semver": "^5.3.0",