Change copyright year to 2025

[BenediktBurger]

Closes #105

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.27%. Comparing base (247c8ff) to head (81ca5f5).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #106   +/-   ##
=======================================
  Coverage   91.27%   91.27%           
=======================================
  Files          37       37           
  Lines        2979     2979           
  Branches      306      306           
=======================================
  Hits         2719     2719           
  Misses        224      224           
  Partials       36       36           

Flag	Coverage Δ
unittests	91.27% <ø> (ø)

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