fix(deps): update dependency fs-extra to v8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
fs-extra	dependencies	major	^7.0.0 -> ^8.0.0	source

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Release Notes

jprichardson/node-fs-extra

v8.0.0

Compare Source

NOTE: Node.js v6 support is depreciated, and will be dropped in the next major release.

• Use renameSync() under the hood in moveSync()
• Fix bug with bind-mounted directories in copy*() (#​613, #​618)
• Fix bug in move() with case-insensitive file systems
• Use fs.stat()'s bigint option in copy*() & move*() where possible (#​657)

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[coveralls]

Pull Request Test Coverage Report for Build 434

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 432:	0.0%
Covered Lines:	2176
Relevant Lines:	2176

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💛 - Coveralls