[1.1] test_parameter_name fails with Python 3.12

[olebole]

Gammapy version

Gammapy 1.1, Python 3.12

Bug description
When running the CI tests in the Debian package, I get the following failure with Python 3.12.1:

_____________________________ test_parameter_name ______________________________

    def test_parameter_name():
        with pytest.raises(RuntimeError):

>           class MyTestModel:

gammapy/modeling/models/tests/test_core.py:256:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = Parameter(name='wrong-name', value=3.0, factor=3.0, scale=1.0,
unit=Unit(dimensionless), min=nan, max=nan, frozen=False,
id=0xffff8e307aa0)
owner = <class 'gammapy.modeling.models.tests.test_core.test_parameter_name.<locals>.MyTestModel'>
name = 'par'

    def __set_name__(self, owner, name):
        if not self._name == name:
>           raise ValueError(f"Expected parameter name '{name}', got {self._name}")
E           ValueError: Expected parameter name 'par', got wrong-name
E           Error calling __set_name__ on 'Parameter' instance 'par'
in 'MyTestModel'

gammapy/modeling/parameter.py:165: ValueError

This is a regression, with Python 3.11 and otherwise identical packages, I don't see the failure.

Expected behavior

All tests should pass.

To Reproduce

Run the CI tests with Python 3.12

Other information

This was observed with the Debian package of Gammapy, when trying to rebuild for Python 3.12 support. A Debian bug was filed as #1058047. Full build log f.e. here.

[olebole]

Any progress here? Ubuntu has its Debian import freeze soon, and I would like to keep this in Ubuntu 22.04.

[registerrier]

This has been solved in #5143 . Closing now.