chore(deps): update dependency lefthook to v1.6.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
lefthook	1.6.7 -> 1.6.8

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Release Notes

evilmartians/lefthook (lefthook)

### [`v1.6.8`](https://togithub.com/evilmartians/lefthook/blob/HEAD/CHANGELOG.md#168-2024-04-02) [Compare Source](https://togithub.com/evilmartians/lefthook/compare/v1.6.7...v1.6.8) - fix: fallback to empty tree sha when no upstream set ([#​687](https://togithub.com/evilmartians/lefthook/pull/687)) by [@​mrexox](https://togithub.com/mrexox) - feat: add priorities to scripts ([#​684](https://togithub.com/evilmartians/lefthook/pull/684)) by [@​mrexox](https://togithub.com/mrexox) - deps: By April, 1 ([#​678](https://togithub.com/evilmartians/lefthook/pull/678)) by [@​mrexox](https://togithub.com/mrexox)

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