Merge branch 'prerelease-2.5' into 'develop'

declearn/dataset/_inmemory.py

declearn/dataset/examples/_mnist.py

declearn/dataset/utils/_save_load.py

declearn/dataset/utils/_split_classif.py

declearn/model/haiku/__init__.py

declearn/model/haiku/_vector.py

declearn/model/sklearn/_np_vec.py

declearn/model/tensorflow/_vector.py

declearn/model/tensorflow/utils/_gpu.py

declearn/model/torch/_vector.py

declearn/typing.py

declearn/version.py

docs/release-notes/SUMMARY.md

docs/release-notes/v2.5.0.md

docs/user-guide/SUMMARY.md

docs/user-guide/index.md

docs/user-guide/package.md

docs/user-guide/secagg.md

pyproject.toml

test/dataset/test_split_multi_classif.py