ruff 0.16 flags date.today() (DTZ011) while 0.17 drops that rule from its defaults and flags the noqa as unused (RUF100), so CI's unpinned ruff failed lint-python. datetime.now().astimezone().date() yields the same local date and passes both, matching debian.py and rpm_changelog.py. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>