MNT: Alter PYPI classifier naming.

[phmbressan]

Pull request type

• [X] Other (please describe): PYPI compilation.

Checklist

• [X] CHANGELOG.md has been updated (if relevant)

Current behavior

One of the classifiers of the new pyproject.toml file is not recognized.

New behavior

Comparing the current classifiers with v1.2.2 it seems there is an added one.

Breaking change

• [ ] Yes
• [X] No

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 73.60%. Comparing base (ecfe5f4) to head (3629e86). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #615 +/- ## ========================================== - Coverage 73.69% 73.60% -0.09% ========================================== Files 70 70 Lines 10286 10289 +3 ========================================== - Hits 7580 7573 -7 - Misses 2706 2716 +10 ```

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