Update Illinois 2025 state tax code

[daphnehanse11]

Fixes #7224

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 75.09%. Comparing base (60c5dcc) to head (007a8e9).
⚠️ Report is 25 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7226      +/-   ##
==========================================
+ Coverage   73.76%   75.09%   +1.32%     
==========================================
  Files        3666     3666              
  Lines       52712    52710       -2     
  Branches      263      263              
==========================================
+ Hits        38882    39581     +699     
+ Misses      13815    13091     -724     
- Partials       15       38      +23     

Flag	Coverage Δ
unittests	75.09% <ø> (+1.32%)	⬆️

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