fvm_shared@v4.8.4

What's Changed

• fix: configure trusted cargo publishing by @galargh in #2341
• ci: add manual cargo publish dispatch by @galargh in #2344
• ci: use cargo-release for publishing by @galargh in #2346
• feat: nv30 skeleton by @rjan90 in #2348

Full Changelog: https://github.com/filecoin-project/ref-fvm/compare/fvm@v4.8.3...fvm_shared@v4.8.4