The LICENSE file's copyright year was updated, so the checksum changed.
rdflib now uses poetry as the backend, so switch from setuptools3.
Changelog: https://github.com/RDFLib/rdflib/releases
Signed-off-by: Trevor Gamblin <tgamblin@baylibre.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
