v1.20260101.0

What's Changed

• Disable Python import tests by @hoodmane in https://github.com/cloudflare/workerd/pull/5795
• Improve CI build performance, especially on macOS by @danlapid in https://github.com/cloudflare/workerd/pull/5796
• Improve Windows CI build performance by @danlapid in https://github.com/cloudflare/workerd/pull/5803
• Make import_from_js modules serializable by @hoodmane in https://github.com/cloudflare/workerd/pull/5710

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20251231.0...v1.20260101.0