v1.20260120.0

What's Changed

• Update dependencies by @workers-devprod in https://github.com/cloudflare/workerd/pull/5927
• Reapply "chore: avoid warnings for External Allocated Memory" by @tewaro in https://github.com/cloudflare/workerd/pull/5928
• Implement internal.h/c++ drainingRead by @jasnell in https://github.com/cloudflare/workerd/pull/5919
• [NFC] Removing outdated streams working docs by @jasnell in https://github.com/cloudflare/workerd/pull/5917
• [NFC] Opencode architect and submit agent definitions by @jasnell in https://github.com/cloudflare/workerd/pull/5916

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20260118.0...v1.20260120.0