use simd-json-derive fixes #39

[Licenser]

• update to latest simd-json version
• use simd-json-derive for simd-json tests instead of serde-derive

closes #39

[Licenser]

I also re-set the auto-generated files as they shouldn't be changed in the PR.

[djkoloski]

I need to get around to fixing that workflow so it doesn't try to push. Thanks for the PR!

[Licenser]

Thanks for the merge :) the PR found a perf-bug in simd-json win win for doing it ;)