ci: fix fuzz

[jplomas]

fixes #174

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (88f6b1e) to head (29a8b97).
⚠️ Report is 9 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #175   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           24        24           
  Lines         3651      3651           
=========================================
  Hits          3651      3651           

Flag	Coverage Δ
dilithium5	100.00% <ø> (ø)
mldsa87	100.00% <ø> (ø)

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