Update python3 recipe to 3.11.6

[misl6]

🟢 Tested on touchtracer example
🟢 Tested on a complete production app (but not in production, yet)

⚠️ Some recipes may now be broken.

[AndreMiras]

LGTM,
Do you have an idea of what's happening with the CI?

Run python setup.py install
Traceback (most recent call last):
  File "/private/tmp/cirrus-ci/working-dir/actions-runner/_work/kivy-ios/kivy-ios/setup.py", line 1, in <module>
    from setuptools import setup
ModuleNotFoundError: No module named 'setuptools'
Error: Process completed with exit code 1.
```

[misl6]

LGTM, Do you have an idea of what's happening with the CI?

Run python setup.py install
Traceback (most recent call last):
  File "/private/tmp/cirrus-ci/working-dir/actions-runner/_work/kivy-ios/kivy-ios/setup.py", line 1, in <module>
    from setuptools import setup
ModuleNotFoundError: No module named 'setuptools'
Error: Process completed with exit code 1.

Ouch! The default Python version for setup-python is now 3.12, and 3.12 does not install setuptools by default (See: python/cpython#95299)

... I will definitely address this issue and then re-run the CI on top of it for this PR.