build(deps): Bump fs-extra from 7.0.1 to 8.0.0 (#143)

Bumps [fs-extra](https://github.com/jprichardson/node-fs-extra) from 7.0.1 to 8.0.0.
- [Release notes](https://github.com/jprichardson/node-fs-extra/releases)
- [Changelog](https://github.com/jprichardson/node-fs-extra/blob/master/CHANGELOG.md)
- [Commits](jprichardson/node-fs-extra@7.0.1...8.0.0)

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

package.json

@@ -40,7 +40,7 @@
     "digitalocean": "^1.1.1",
     "dockerode": "^2.5.8",
     "download": "^7.1.0",
-    "fs-extra": "^7.0.1",
+    "fs-extra": "^8.0.0",
     "hasbin": "^1.2.3",
     "inquirer": "^6.3.1",
     "js-yaml": "^3.13.1",