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main/py3-packaging: upgrade to 24.2

mio requested to merge mio/aports:py3-packaging into master

https://github.com/pypa/packaging/releases/tag/24.2

The release adds "PEP 639: Implement License-Expression and License-File", and upgrading resolves ModuleNotFoundError when another package attempts to import packaging.licenses.

Error found during a rebuild of mkdocs on the 3.21 builders.

Traceback (most recent call last):
  File "/usr/bin/gpep517", line 6, in <module>
    sys.exit(main())
             ^^^^^^
  File "/usr/lib/python3.12/site-packages/gpep517/__main__.py", line 439, in main
    return func(args)
           ^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/gpep517/__main__.py", line 229, in build_wheel
    print(build_wheel_impl(args, args.wheel_dir), file=out)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/gpep517/__main__.py", line 221, in build_wheel_impl
    wheel_name = backend.build_wheel(str(wheel_dir), args.config_json)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/hatchling/build.py", line 58, in build_wheel
    return os.path.basename(next(builder.build(directory=wheel_directory, versions=['standard'])))
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.12/site-packages/hatchling/builders/plugin/interface.py", line 90, in build
    self.metadata.validate_fields()
  File "/usr/lib/python3.12/site-packages/hatchling/metadata/core.py", line 266, in validate_fields
    self.core.validate_fields()
  File "/usr/lib/python3.12/site-packages/hatchling/metadata/core.py", line 1363, in validate_fields
    getattr(self, attribute)
  File "/usr/lib/python3.12/site-packages/hatchling/metadata/core.py", line 677, in license
    from packaging.licenses import canonicalize_license_expression
ModuleNotFoundError: No module named 'packaging.licenses'
Edited by mio

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