The new version requires hatchling to build, so add that and remove
poetry (which isn't actually needed). Note that the changelog says it
switched to PDM from poetry.
Changelog: https://github.com/Tinche/aiofiles#history
Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
