v2.9.5-canary.4

<!-- Release notes generated using configuration in .github/release.yml at v2.9.5-canary.4 -->

What's Changed

Changelog

• perf: Increase remote cache upload chunk size from 8KB to 256KB by @anthonyshew in https://github.com/vercel/turborepo/pull/12568
• perf: Parallelize boundaries checking with Rayon and cache DFS traversals by @anthonyshew in https://github.com/vercel/turborepo/pull/12569

Full Changelog: https://github.com/vercel/turborepo/compare/v2.9.5-canary.3...v2.9.5-canary.4