Python 3.12 support

[cdeil]

Hi - could you please support and create binary package for Python 3.12?

I didn't see anything with "312" here:

https://anaconda.org/conda-forge/iminuit/files
https://pypi.org/project/iminuit/2.24.0/#files

Concretely I tried to use Python 3.12 with Conda-forge and got this error:

LibMambaUnsatisfiableError: Encountered problems while solving:
  - nothing provides _python_rc needed by python-3.12.0rc3-rc3_h47c9636_1_cpython

Could not solve for environment specs
The following packages are incompatible
├─ iminuit is installable with the potential options
│  ├─ iminuit [2.0.0|2.10.0|...|2.8.4] would require
│  │  └─ python_abi 3.8.* *_cp38, which can be installed;
│  ├─ iminuit [2.0.0|2.10.0|...|2.8.4] would require
│  │  └─ python_abi 3.9.* *_cp39, which can be installed;
│  ├─ iminuit [2.10.0|2.11.2|...|2.8.4] would require
│  │  └─ python_abi 3.10.* *_cp310, which can be installed;
│  └─ iminuit [2.17.0|2.18.0|...|2.24.0] would require
│     └─ python_abi 3.11.* *_cp311, which can be installed;
└─ python 3.12**  is not installable because there are no viable options
   ├─ python [3.12.0|3.12.1] would require
   │  └─ python_abi 3.12.* *_cp312, which conflicts with any installable versions previously reported;
   └─ python 3.12.0rc3 would require
      └─ _python_rc, which does not exist (perhaps a missing channel).

I'll use 3.11 for now.

[HDembinski]

Yes, will be supported in the next release.

[HDembinski]

The release 2.25 is out now, with CPython-3.12 wheels.

[cdeil]

Wonderfull! Thank you!

And also I see iminuit conda packages for Python 3.12 are also already out here:
https://anaconda.org/conda-forge/iminuit/files

And for me on MacOS this works perfectly:

conda create -n iminuit-env-312 python=3.12 iminuit

Now waiting for DuckDB release to support 3.12 I think very soon and then we can update. :-)

[HDembinski]

Just out of curiosity, why the rush toward the latest Python release?

[cdeil]

No big reason. We are currently on Python 3.10 which is from 2021. We could just stay another year on it. But I think it's also nice for devs to learn and use the new and better version, and should we do the version upgrade this year I'd prefer to directly jump to 3.12. :-)

It's great that you added the support - now everyone can choose what they like.

[HDembinski]

Apart from ever better typing support, a major reason for wanting to move to 3.11 is the speed-up. But 3.12 did not bring dramatic new features, that's why I was asking.