v2.8.18-canary.26

<!-- Release notes generated using configuration in .github/release.yml at v2.8.18-canary.26 -->

What's Changed

Changelog

• fix: Pass TURBO_* env vars through to child processes in Strict Mode by @anthonyshew in https://github.com/vercel/turborepo/pull/12372

Full Changelog: https://github.com/vercel/turborepo/compare/v2.8.18-canary.25...v2.8.18-canary.26