Address inconsistent license in pyproject.toml

[konstntokas]

license adjusted in pyproject.toml

Closes #29

Checklist:

• Add unit tests and/or doctests in docstrings
• Add docstrings and API docs for any new/modified user-facing classes and functions
• New/modified features documented in docs/
• Changes documented in CHANGES.md
• CI checks pass
• Test coverage remains or increases (target 100%)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.65%. Comparing base (8344881) to head (3bf6dda).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #30   +/-   ##
=======================================
  Coverage   98.65%   98.65%           
=======================================
  Files          20       20           
  Lines        2009     2009           
=======================================
  Hits         1982     1982           
  Misses         27       27           

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