Update dependency cross-env to v7.0.3

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
cross-env	7.0.2 -> 7.0.3

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Release Notes

kentcdodds/cross-env

### [`v7.0.3`](https://togithub.com/kentcdodds/cross-env/releases/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))

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