Fix CI tests issue with

[vfdev-5]

Fix failing test:

=========================== short test summary info ============================
FAILED tests/ignite/metrics/test_roc_auc.py::test_check_compute_fn - Failed: DID NOT WARN. No warnings of type (<class 'ignite.metrics.epoch_metric.EpochMetricWarning'>,) were emitted.
 Emitted warnings: [ UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.'),
  UndefinedMetricWarning('Only one class is present in y_true. ROC AUC score is not defined in that case.')].
======================== 1 failed, 14 warnings in 3.43s ========================

Most probably the reason of the failure is the new version of scikit-learn: 1.16.0 released 16h ago.
Let's check the test and adapt the warning type to the one that is raised by scikit-learn.

Reported :

• https://github.com/pytorch/ignite/actions/runs/12246805879/job/34163433521

[github-actions]

Hey 👋, I've just created a thread for this issue on PyTorch-Ignite Discord where you can quickly talk to the community on the topic.

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