Update build pipeline and switch to pytest

[naegelejd]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the build pipeline and migrates the test suite from nose to pytest. The changes modernize the testing infrastructure and build configuration to align with current Python packaging standards.

Key changes include:

• Complete migration from nose to pytest with updated assertion patterns and fixtures
• Modernization of build system from legacy setup.py to pyproject.toml configuration
• Updated CI/CD pipeline to use pytest and more recent action versions

Reviewed Changes

Copilot reviewed 14 out of 16 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/test_waveform.py	Migrated from nose decorators to pytest, updated assertions and exception handling
tests/test_image.py	Replaced nose.tools with pytest equivalents, converted eq_ to standard assert statements
tests/test_hdf5.py	Converted nose setup/teardown to pytest fixtures, updated map() calls to explicit loops
tests/test_file.py	Migrated nose test decorators to pytest fixtures for temp directory management
tests/test_common.py	Removed deprecated functions, added comparison utilities for test assertions
tests/test_acquisition.py	Converted nose decorators and assertions to pytest equivalents
setup.py	Restructured build commands for schema generation with new command class structure
pyproject.toml	Added modern Python project configuration with dependencies and metadata
ismrmrd/xsd/init.py	Minor import formatting cleanup
conda/run_test.sh	Updated test command from nosetests to pytest
conda/meta.yaml	Replaced nose dependency with pytest in conda configuration
conda/conda_build_config.yaml	Updated Python version support from 3.9 to 3.10-3.12
.github/workflows/python-publish.yml	Modernized GitHub Actions with updated versions and pytest integration
.github/workflows/ismrmrd_python_conda.yml	Updated workflow triggers and action versions

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[johnstairs]

Shouldn't the version be bumped?

[naegelejd]

Normally, yes, but this project's version has historically followed the version of the main C++ implementation.

So, the version will bump to 1.14.2 in the next PR when I add the ProtocolSerializer, bringing the API to feature parity with the C++ library.