Auto update bindings.rs according to the `bb` version

[moven0831]

• related issue: Streamline bb backend builds & integration with Github Action #8

Currently in noir-rs, we download bb from released assets of bb_rs (e.g. https://github.com/zkmopro/aztec-packages/releases/tag/1.0.0-nightly.20250723) in zkmopro/aztec-package.

The bindings for bb APIs are also generated when compiling bb_rs, but we update them manually in noir-rs.

A better way is to include the bindings.rs inside each of the zipped released assets, and then automatically update them to noir-rs with build.rs

Acceptance Criteria

• Release artifact includes bindings in zkmopro/aztec-package
• Auto-update bb/build.rs via build.rs
• Update this to noir-rs v1.0.0-beta.8-3