v1.20260506.1

What's Changed

• move v8 version to 14.8 by @dcarney-cf in https://github.com/cloudflare/workerd/pull/6726
• Add optional traceFlags to SpanContext for upstream sampling propagation by @mar-cf in https://github.com/cloudflare/workerd/pull/6576
• Add compat-enable-date for process-pth-files by @hoodmane in https://github.com/cloudflare/workerd/pull/6727

Full Changelog: https://github.com/cloudflare/workerd/compare/v1.20260505.1...v1.20260506.1