napi-derive@2.16.12

What Changed

• fix(napi-derive): string enum validate logic #2213 @Brooooooklyn
• fix(napi-derive): warning in empty enum codegen #2214 @Brooooooklyn
• fix(napi,napi-derive): ffi lifetime and pointer sound issues #2216 @cathy-sjh
• fix(napi-derive): replace self when function returns Result #2224 @CPunisher
• perf(macro): constructor don't support asynchronous function #2239 @richerfu
• fix(napi-derive): call flush on the BufWriter #2242 @richerfu

Full Changelog: https://github.com/napi-rs/napi-rs/compare/napi-derive@2.16.10...napi-derive@2.16.12