Update dependency cross-env to v7

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
cross-env	^5.2.0 -> ^7.0.0

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Release Notes

kentcdodds/cross-env (cross-env)

### [`v7.0.3`](https://togithub.com/kentcdodds/cross-env/releases/tag/v7.0.3) [Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v7.0.2...v7.0.3) ##### Bug Fixes - add maintenance mode notice ([fe80c84](https://togithub.com/kentcdodds/cross-env/commit/fe80c849bba0dc3c4f5930c45e70a34952aa961f)) ### [`v7.0.2`](https://togithub.com/kentcdodds/cross-env/releases/tag/v7.0.2) [Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v7.0.1...v7.0.2) ##### Reverts - Revert "fix: signal handling ([#​227](https://togithub.com/kentcdodds/cross-env/issues/227))" ([2a1f44c](https://togithub.com/kentcdodds/cross-env/commit/2a1f44c9053702fdc3fffca38afc041cbf634a05)), closes [#​227](https://togithub.com/kentcdodds/cross-env/issues/227) ### [`v7.0.1`](https://togithub.com/kentcdodds/cross-env/releases/tag/v7.0.1) [Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v7.0.0...v7.0.1) ##### Bug Fixes - signal handling ([#​227](https://togithub.com/kentcdodds/cross-env/issues/227)) ([8a9cf0e](https://togithub.com/kentcdodds/cross-env/commit/8a9cf0e4de5dba2c990ff9bee77bf65cb3fc2c8d)) ### [`v7.0.0`](https://togithub.com/kentcdodds/cross-env/releases/tag/v7.0.0) [Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v6.0.3...v7.0.0) ##### Features - update dependencies ([#​223](https://togithub.com/kentcdodds/cross-env/issues/223)) ([4ec6f40](https://togithub.com/kentcdodds/cross-env/commit/4ec6f4009d05c571d1737306cb787499d511048b)) ##### BREAKING CHANGES - Drop Node 8 support ### [`v6.0.3`](https://togithub.com/kentcdodds/cross-env/releases/tag/v6.0.3) [Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v6.0.2...v6.0.3) ##### Bug Fixes - do not compile anything ([67f21c3](https://togithub.com/kentcdodds/cross-env/commit/67f21c3)) ### [`v6.0.2`](https://togithub.com/kentcdodds/cross-env/releases/tag/v6.0.2) [Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v6.0.1...v6.0.2) ##### Bug Fixes - table of contents in README ([a825e9c](https://togithub.com/kentcdodds/cross-env/commit/a825e9c)) ### [`v6.0.1`](https://togithub.com/kentcdodds/cross-env/releases/tag/v6.0.1) [Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v6.0.0...v6.0.1) ##### Bug Fixes - update all packages, tests, and README ([36bb6c3](https://togithub.com/kentcdodds/cross-env/commit/36bb6c3)) ### [`v6.0.0`](https://togithub.com/kentcdodds/cross-env/releases/tag/v6.0.0) [Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v5.2.1...v6.0.0) ##### Bug Fixes - bumped cross-spawn to version 7.0.0 ([#​211](https://togithub.com/kentcdodds/cross-env/issues/211)) ([61ebf59](https://togithub.com/kentcdodds/cross-env/commit/61ebf59)) ##### BREAKING CHANGES - Drop support for Node.js < 7. ### [`v5.2.1`](https://togithub.com/kentcdodds/cross-env/releases/tag/v5.2.1) [Compare Source](https://togithub.com/kentcdodds/cross-env/compare/v5.2.0...v5.2.1) ##### Bug Fixes - remove is-windows dependency ([#​207](https://togithub.com/kentcdodds/cross-env/issues/207)) ([a75fd0e](https://togithub.com/kentcdodds/cross-env/commit/a75fd0e))

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