fix(deps): update dependency fs-extra to version .x 🌟

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
fs-extra	dependencies	major	5.0.0 -> 6.0.1
fs-extra	devDependencies	major	5.0.0 -> 6.0.1

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Release Notes

jprichardson/node-fs-extra

v6.0.1

Compare Source

• Fix fs.promises ExperimentalWarning on Node v10.1.0 (#​578)

v6.0.0

Compare Source

• Drop support for Node.js versions 4, 5, & 7 (#​564)
• Rewrite move to use fs.rename where possible (#​549)
• Don't convert relative paths to absolute paths for filter (#​554)
• copy*'s behavior when preserveTimestamps is false has been OS-dependent since 5.0.0, but that's now explicitly noted in the docs (#​563)
• Fix subdirectory detection for copy* & move* (#​541)
• Handle case-insensitive paths correctly in copy* (#​568)

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[jennifer-shehane]

Removing support for Node 4, so cannot update cli currently to fs-extra 6.0.1 - will update all other packages. Update for fs-extra to cli will go here: #4226

[cypress-bot]

Released in 3.3.2.