Fix: replace deprecated force_all_finite with ensure_all_finite for sklearn>=1.6

[cngmid]

Reference issues/PRs
Fixes #719
This PR updates giotto‑tda’s use of sklearn.utils.check_array to maintain compatibility with scikit‑learn ≥ 1.6, which removed the force_all_finite parameter. The new parameter ensure_all_finite is now used instead.

Types of changes

• Replaced all occurrences of force_all_finite with ensure_all_finite
• The change is not backward‑compatible with scikit‑learn < 1.6

Description
Replaced all occurrences of force_all_finite with ensure_all_finite occurring in 5 files homology\cubical.py, homology\simplicial.py, metaestimators\collection_transformer.py, test_validation.py and utils\validation.py.

Any other comments?
This is a minimal, safe compatibility patch.
No functional behavior of giotto‑tda is changed beyond restoring compatibility.

Checklist

• I have read the guidelines for contributing.
• My code follows the code style of this project. I used flake8 to check my Python changes.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed. I used pytest to check this on Python tests.
• Amended requirements.txt with scikit-learn >= 1.6.

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