Drop Python v3.8 support
### Date when Python project won’t support v3.8 - [Python 3.8 support has been dropped on October 7th of 2024](https://devguide.python.org/versions/) [[1](https://endoflife.date/python)] - [Platform which still uses Py3.8](https://repology.org/badge/vertical-allrepos/python.svg) ## Todos ### DuniterPy - [x] Create DuniterPy follow-up? duniterpy#199+ ### Silkaj - [x] Delete test job for v3.8 from `.gitlab-ci.yml` - [x] `pyproject.toml`: Bump minimum versions: - [x] `tools.poetry.dependency.python` - [x] `tools.ruff.target-version` - [x] [Fix types](https://peps.python.org/pep-0585/) - [x] Create ticket for dropping Python 3.9 support: Merge with ticket about adding support for new the version? Since both are happening at the same time. Or, do we keep the two different things separated? - #489+
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