Updates for Pytorch 2.7

[ericspod]

Description

This will update MONAI to be compatible with PyTorch 2.7. There appear to be few code changes with this release so hopefully this will be simply a matter of updating versions.

Types of changes

• Non-breaking change (fix or new feature that would not break existing functionality).
• Breaking change (fix or new feature that would cause existing functionality to change).
• New tests added to cover the changes.
• Integration tests passed locally by running ./runtests.sh -f -u --net --coverage.
• Quick tests passed locally by running ./runtests.sh --quick --unittests --disttests.
• In-line docstrings updated.
• Documentation updated, tested make html command in the docs/ folder.

[Copilot]

Pull Request Overview

This PR updates MONAI’s torch dependency to a newer version aiming for improved compatibility with PyTorch. The changes include:

• Increasing the minimum torch version in pyproject.toml from 2.3.0 to 2.4.1.
• Updating the installation command in the GitHub Actions workflow (pythonapp.yml) accordingly.
• Modifying the torch version matrix in the minimal workflow (pythonapp-min.yml).

Reviewed Changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated 3 comments.

File	Description
pyproject.toml	Updated minimum torch dependency and Black target versions
.github/workflows/pythonapp.yml	Updated torch installation command to new dependency
.github/workflows/pythonapp-min.yml	Revised torch version matrix for testing

Files not reviewed (2)

• docs/requirements.txt: Language not supported
• setup.cfg: Language not supported

[ericspod]

It's possible the CPU provided by the Windows runner is too old for PyTorch 2.7 which may now require instructions it doesn't have.

[ericspod]

The issue with Windows appears to be related to float 64 calculations, specifically with RandRotate in tests\integration\test_pad_collation.py. This doesn't appear to be pad collation related and goes away if float 32 is used as the dtype. I'm investigating further.