Update pnpm to v8.15.8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pnpm (source)	8.15.6 -> 8.15.8

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Release Notes

pnpm/pnpm (pnpm)

### [`v8.15.8`](https://togithub.com/pnpm/pnpm/compare/v8.15.7...v8.15.8) [Compare Source](https://togithub.com/pnpm/pnpm/compare/v8.15.7...v8.15.8) ### [`v8.15.7`](https://togithub.com/pnpm/pnpm/compare/v8.15.6...v8.15.7) [Compare Source](https://togithub.com/pnpm/pnpm/compare/v8.15.6...v8.15.7)

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Configuration

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[changeset-bot[bot]]

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Latest commit: 2d85f1f9219da7b1c1a463a59316ed12304efaf2

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