Update dependency fs-extra to v8.1.0 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
fs-extra	dependencies	minor	8.0.1 -> 8.1.0
@types/fs-extra	dependencies	major	7.0.0 -> 8.0.1

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Release Notes

jprichardson/node-fs-extra

### [`v8.1.0`](https://togithub.com/jprichardson/node-fs-extra/blob/master/CHANGELOG.md#​810--2019-06-28) [Compare Source](https://togithub.com/jprichardson/node-fs-extra/compare/32a65ffd9111829dbba15d79f1d27519c7dc96a6...8.1.0) - Add support for promisified `fs.realpath.native` in Node v9.2+ ([#​650](https://togithub.com/jprichardson/node-fs-extra/issues/650), [#​682](https://togithub.com/jprichardson/node-fs-extra/pull/682)) - Update `graceful-fs` dependency ([#​700](https://togithub.com/jprichardson/node-fs-extra/pull/700)) - Use `graceful-fs` everywhere ([#​700](https://togithub.com/jprichardson/node-fs-extra/pull/700))

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