CI: Switch default Python version to 3.12 (#448)

• Move coverage and integration testing to v3.12 job
• Remove allow_failure
• Switch image creation to Py3.12

changed milestone to %0.12.0

added CI/CD Dev Env Project Test labels

assigned to @moul

added 1 commit

• ac08c1d9 - Trigger pre-commit jobs in case .gitlab-ci.yml changes

Compare with previous version

requested review from @moul

approved this merge request

merged