Update wasi-stub dependencies

[Caellian]

Very minimal changes, just updated dependencies.

Some used structures changed a little, but the code is mostly the same.

[astrale-sharp]

Hi there, my programming computer is dead unfortunately so before merging i'd need a github action for automatic testing implemented, i might do it myself at some point.

[arnaudgolfouse]

This looks really good, thanks! Please rebase this on master, and I'll merge it.

[Caellian]

Please rebase this on master, and I'll merge it.

Done. Sorry for the wait. Had I known it was a 1-line change, would've done it ages ago.

Just squash the fmt commit.

[astrale-sharp]

@arnaudgolfouse