Maintenance: Upgrade to recent versions of `pydantic`

[azogue]

All changes

• 📦️ env: Bump version and upgrade to pydantic v2
• ♻️ Migrate pydantic v2 syntax for validators, parsers, serializers, ...
• ✅ Migrate pydantic v2 syntax for model load/dump
• 🎨 lint: pre-commit update and move to ruff-format
• 🎨 lint: Apply format changes and lint fixes
• 🎨 lint: More lint fixes and mypy exclusions
• 🎨 lint: More lint fixes
• 🐛 Fix extra style params passed to 'add_label_to_curve'
• 🍱 Adjust matplotlib version in generated assets
• 📝 Update CHANGELOG
• 👷 ci: Split actions for tests on PRs and publish package on main

[github-actions[bot]]

☂️ Python Coverage

current status: ✅

Overall Coverage

Lines	Covered	Coverage	Threshold	Status
1303	1303	100%	0%	🟢

New Files

No new covered files...

Modified Files

File	Coverage	Status
psychrochart/chart.py	100%	🟢
psychrochart/chart_entities.py	100%	🟢
psychrochart/chartzones.py	100%	🟢
psychrochart/models/annots.py	100%	🟢
psychrochart/models/base.py	100%	🟢
psychrochart/models/config.py	100%	🟢
psychrochart/models/curves.py	100%	🟢
psychrochart/models/parsers.py	100%	🟢
psychrochart/models/styles.py	100%	🟢
psychrochart/models/validators.py	100%	🟢
psychrochart/plot_logic.py	100%	🟢
psychrochart/util.py	100%	🟢
TOTAL	100%	🟢

updated for commit: 2d54bed by action🐍