Bump stwo-circuits.

[ilyalesokhin-starkware]

Type

• feature
• bugfix
• dev (no functional changes, no API changes)
• fmt (formatting, renaming)
• build
• docs
• testing

Description

Breaking changes?

• yes
• no

---

This change is 

[cursor]

PR Summary

High Risk
Changes STARK circuit verifier dependencies and the hardcoded preprocessed root used in recursive proof verification; mismatches would break or mis-verify proofs.

Overview
Bumps all stwo-circuits git dependencies from 9ff7fc8 to 618db0a in privacy_circuit_verify and privacy_prove, with Cargo.lock updated to match.

PRIVACY_RECURSION_CIRCUIT_PREPROCESSED_ROOT in crates/privacy_circuit_verify/src/consts.rs is replaced with the root expected by the new circuit revision so recursive privacy proof verification stays aligned with prove/verify behavior.

^{Reviewed by Cursor Bugbot for commit 1d2d446. Bugbot is set up for automated code reviews on this repo. Configure here.}

[yuvalsw]

@yuvalsw reviewed 3 files and all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on leo-starkware).

[yuvalsw]

@yuvalsw made 1 comment.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on leo-starkware).

[yuvalsw]

@yuvalsw reviewed 1 file and all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on leo-starkware).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 59.19%. Comparing base (ea3b062) to head (1d2d446).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #355   +/-   ##
=======================================
  Coverage   59.19%   59.19%           
=======================================
  Files          35       35           
  Lines        5303     5303           
=======================================
  Hits         3139     3139           
  Misses       2164     2164           

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