fix(deps): update dependency pkg-dir to v8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pkg-dir	^7.0.0 -> ^8.0.0

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Release Notes

sindresorhus/pkg-dir (pkg-dir)

### [`v8.0.0`](https://togithub.com/sindresorhus/pkg-dir/releases/tag/v8.0.0) [Compare Source](https://togithub.com/sindresorhus/pkg-dir/compare/v7.0.0...v8.0.0) ##### Breaking - Require Node.js 18 [`9337d45`](https://togithub.com/sindresorhus/pkg-dir/commit/9337d45)

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