Bump rimraf from 2.7.0 to 3.0.0

Bumps [rimraf](https://github.com/isaacs/rimraf) from 2.7.0 to 3.0.0.
- [Release notes](https://github.com/isaacs/rimraf/releases)
- [Commits](isaacs/rimraf@v2.7.0...v3.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -71,7 +71,7 @@
     "mkdirp": "^0.5.1",
     "mocha": "^6.2.0",
     "now-travis": "^1.2.0",
-    "rimraf": "^2.7.0",
+    "rimraf": "^3.0.0",
     "supertest": "^4.0.2",
     "walk-sync": "^2.0.2"
   },