Fix: Pythom 3.12 fails setup libsecp256k1

[hoh]

When "using bundled libsecp256k1", the setup using /tmp/venv/bin/hatch run testing:test fails to proceed on Python 3.12.

That library secp256k1 has been unmaintained for more than 2 years now (0.14.0, Nov 6, 2021), and seems to not support Python 3.12.

The error in the logs:

File "/tmp/pip-build-env-ye8d6ort/overlay/lib/python3.12/site-packages/setuptools/_distutils/dist.py", line 862, in get_command_obj
 cmd_obj = self.command_obj[command] = klass(self)
                                                ^^^^^^^^^^^
      TypeError: 'NoneType' object is not callable
      [end of output]

See failing CI run:
https://github.com/aleph-im/aleph-sdk-python/actions/runs/9613634583/job/26516767722

[github-actions]

Summary:
This PR introduces a change to the GitHub Actions workflow configuration. The modification involves updating the matrix of Python versions to exclude Python 3.12, due to an issue that prevents it from working. This change does not affect the overall functionality of the project but ensures that the workflow does not fail unnecessarily.

Highlight:

-       python-version: [ "3.9", "3.10", "3.11", "3.12" ]
+       python-version: [ "3.9", "3.10", "3.11" ] # An issue prevents Python 3.12 from working

This change is considered 'BLUE' because it is a straightforward update to the workflow configuration, which does not introduce significant risks or changes to the core functionality of the project. The exclusion of Python 3.12 is noted, but the overall impact on the project is minimal.

[Psycojoker]

LGFM except the comment

What is our long term plan to address this issue? Should we find another more maintained library?

[hoh]

LGFM except the comment

What is our long term plan to address this issue? Should we find another more maintained library?

The discussion on that topic is here: baking-bad/pytezos#370