build(deps-dev): bump pnpm from 9.13.2 to 9.15.0

Bumps [pnpm](https://github.com/pnpm/pnpm/tree/HEAD/pnpm) from 9.13.2 to 9.15.0.
- [Release notes](https://github.com/pnpm/pnpm/releases)
- [Changelog](https://github.com/pnpm/pnpm/blob/v9.15.0/pnpm/CHANGELOG.md)
- [Commits](https://github.com/pnpm/pnpm/commits/v9.15.0/pnpm)

---
updated-dependencies:
- dependency-name: pnpm
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>