chore: update rust to 1.83.0

[aqrln]

Rust 1.83 was released on Thursday, it's time to update as usual.

• Update Rust to 1.83.0
• Update Nix flake
• Update the GitHub linting workflow to lint prisma-schema-build for WASM target on CI (it didn't use to 🤷)
• Fix all compiler and clippy warnings

[github-actions]

WASM Query Engine file Size

Engine	This PR	Base branch	Diff
Postgres	2.049MiB	2.049MiB	33.000B
Postgres (gzip)	821.949KiB	821.938KiB	11.000B
Mysql	2.013MiB	2.013MiB	33.000B
Mysql (gzip)	807.906KiB	807.916KiB	-10.000B
Sqlite	1.910MiB	1.910MiB	33.000B
Sqlite (gzip)	768.169KiB	768.139KiB	31.000B

[codspeed-hq]

CodSpeed Performance Report

Merging #5068 will not alter performance

_{Comparing rust-1.83 (ba8340b) with main (b5a4b8f)}

Summary

✅ 11 untouched benchmarks

[jkomyno]

There are a few linting errors left