CHORE: Update package metadata license (PEP 639)

[SMoraisAnsys]

Description

The way to document licenses in Python project has evolved with PEP 639.
The changes consist in aligning with the python ecosystem.

Issue linked

None

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate tests (unit, integration, system).
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved by the PR if any.
• I have agreed with the Contributor License Agreement (CLA).

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.15%. Comparing base (d48283a) to head (a14ebeb).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6094      +/-   ##
==========================================
- Coverage   85.15%   85.15%   -0.01%     
==========================================
  Files         167      167              
  Lines       63153    63153              
==========================================
- Hits        53781    53780       -1     
- Misses       9372     9373       +1     

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