Bump fs-extra from 7.0.1 to 9.0.0

Bumps [fs-extra](https://github.com/jprichardson/node-fs-extra) from 7.0.1 to 9.0.0.
- [Release notes](https://github.com/jprichardson/node-fs-extra/releases)
- [Changelog](https://github.com/jprichardson/node-fs-extra/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jprichardson/node-fs-extra/compare/7.0.1...9.0.0)

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

package.json

@@ -8,7 +8,7 @@
     "eris": "^0.8.6",
     "express": "^4.16.4",
     "formidable": "^1.2.1",
-    "fs-extra": "^7.0.1",
+    "fs-extra": "^9.0.0",
     "helmet": "^3.15.1",
     "lowdb": "^1.0.0",
     "path": "^0.12.7",