fizzy@90a244a

What's Changed

• Add fizzy_solid_cache_* metrics via vendored Yabeda exporter by @rosa in #2958
• Bump json to 2.20.0 (CVE-2026-54696) by @rosa in #2962

Full Changelog: https://github.com/basecamp/fizzy/compare/fizzy@65bb2f8...fizzy@90a244a