build(deps-dev): update dependency execa to ~5.1.1

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
execa	~5.1 -> ~5.1.1

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Release Notes

sindresorhus/execa

### [`v5.1.1`](https://togithub.com/sindresorhus/execa/releases/tag/v5.1.1) [Compare Source](https://togithub.com/sindresorhus/execa/compare/v5.1.0...v5.1.1) - Fix error message when user passes a single array argument ([#​468](https://togithub.com/sindresorhus/execa/issues/468)) [`2b9c0e1`](https://togithub.com/sindresorhus/execa/commit/2b9c0e1)

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