ArtifactsError type definitions added

What's Changed

• Make wd_tests run in predictable mode by default by @danlapid in https://github.com/cloudflare/workerd/pull/6747
• Add traceFlags to SpanContext type definition by @mar-cf in https://github.com/cloudflare/workerd/pull/6751
• Bump capnp-cpp past AnyStruct schema change and fix compatibility-date by @harrishancock in https://github.com/cloudflare/workerd/pull/6752
• feat: add ArtifactsError type definitions by @dmmulroy in https://github.com/cloudflare/workerd/pull/6710

New Contributors

• @dmmulroy made their first contribution in https://github.com/cloudflare/workerd/pull/6710

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20260511.1...v1.20260514.1