Bump fs-extra from 8.1.0 to 9.0.0

Bumps [fs-extra](https://github.com/jprichardson/node-fs-extra) from 8.1.0 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](jprichardson/node-fs-extra@8.1.0...9.0.0)

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

package.json

@@ -47,7 +47,7 @@
     "@types/tar": "^4.0.3",
     "doctoc": "^1.4.0",
     "dotenv": "^8.1.0",
-    "fs-extra": "^8.1.0",
+    "fs-extra": "^9.0.0",
     "mocha": "^7.0.1",
     "np": "^6.0.0",
     "precise-commits": "^1.0.2",