Fix compatibility with scikit-learn 1.8+

[stratakis]

scikit-learn 1.8.0+ removed the algorithm parameter from AdaBoostClassifier

scikit-learn/scikit-learn#32262

The changes maintain compatibility with previous version of scikit-learn

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❗ Issue Links

Fixes #98

🧪 How Has This Been Tested?

I've tested it on Fedora Rawhide with both scikit-learn 1.7.2 and scikit-learn 1.8.0rc1 and all the tests pass

✅ Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[firefly-cpp]

Thanks, @stratakis!

[firefly-cpp]

@stratakis, should we also update the pyproject.toml and poetry.lock files to version 1.8 or higher?

[stratakis]

@stratakis, should we also update the pyproject.toml and poetry.lock files to version 1.8 or higher?

This change works fine with version 1.6, as the algorithm parameter was deprecated at that version, so no need for updating the dependency pin.

Not sure about the CI though, it seems the macos build is failing.