v2.8.21-canary.1

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What's Changed

Changelog

• docs: Add link to Docker guide in prune --docker flag section by @styfle in https://github.com/vercel/turborepo/pull/12401
• feat: Add global configuration key behind futureFlags.globalConfiguration by @anthonyshew in https://github.com/vercel/turborepo/pull/12399
• chore: Update CODEOWNERS to remove /docs owner by @anthonyshew in https://github.com/vercel/turborepo/pull/12402

Full Changelog: https://github.com/vercel/turborepo/compare/v2.8.20...v2.8.21-canary.1