Upgrade to Python 3.12

[sholloway]

Python 3.12 is GA. Upgrade to it.

Tasks

• [x] Clean up the pyproject.toml file. Replace the dev section with a group section.
• [ ] Update Nix Python to 3.12.x
• [ ] Update Poetry to latest version
• [ ] Upgrade wgpu-py
• [ ] Upgrade dearpygui
• [ ] Upgrade psutil
• [ ] Upgrade more-itertools
• [ ] Upgrade mypy
• [ ] Upgrade mypy
• [ ] Upgrade pudb
• [ ] Upgrade py-spy
• [ ] Upgrade pytest
• [ ] Upgrade pytest-mock
• [ ] Upgrade bpython
• [ ] Upgrade pytest-cov
• [ ] Upgrade pdoc
• [ ] Upgrade matplotlib
• [ ] Upgrade line-profiler
• [ ] Upgrade pytest-benchmark
• [ ] Upgrade pygal
• [ ] Upgrade pygaljs

[sholloway]

This is blocked until DearPyGUI is fully removed or that project releases their package with a v3.12 target.