Turborepo v2.9.15-canary.2 internal release

<!-- Release notes generated using configuration in .github/release.yml at v2.9.15-canary.2 -->

What's Changed

Changelog

• release(turborepo): 2.9.15-canary.1 by @github-actions[bot] in https://github.com/vercel/turborepo/pull/12810

Full Changelog: https://github.com/vercel/turborepo/compare/v2.9.15-canary.1...v2.9.15-canary.2