Bump stwo-cairo to fix num of twiddles

[anatgstarkware]

Type

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

Description

Breaking changes?

• yes
• no

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Note

Medium Risk
Switches core proving-related stwo-cairo-* dependencies from published versions to a specific git revision, which can change prover/FFT behavior and introduce upstream regressions. Also bumps the workspace version, affecting downstream consumers’ dependency resolution.

Overview
Bumps the workspace package version to 1.2.1.

Replaces the workspace’s stwo-cairo-* and cairo-air dependencies from the 1.2.0 crates.io releases to a pinned stwo-cairo git revision (rev = 1f454c2), aligning builds with an upstream fix (e.g., twiddle count) but changing the exact dependency source and code pulled in.

^{Written by Cursor Bugbot for commit 58e82b6. This will update automatically on new commits. Configure here.}

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This change is 

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 53.39%. Comparing base (8f61f37) to head (58e82b6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #331   +/-   ##
=======================================
  Coverage   53.39%   53.39%           
=======================================
  Files          35       35           
  Lines        5291     5291           
=======================================
  Hits         2825     2825           
  Misses       2466     2466           

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