Update dependency rimraf to ^2.7.1 (#16940)

Author: renovate[bot]

package.json

@@ -37,7 +37,7 @@
     "npm-run-all": "4.1.5",
     "plop": "^1.9.1",
     "prettier": "1.17.1",
-    "rimraf": "^2.6.1",
+    "rimraf": "^2.7.1",
     "svgo": "1.3.0",
     "ts-jest": "^22",
     "typescript": "^2.9.2",