print/py-python-ly: update to 0.9.8
Switch to pep517 build.
Changes: https://github.com/frescobaldi/python-ly/compare/v0.9.6...v0.9.8
Changes: https://github.com/frescobaldi/python-ly/blob/v0.9.8/CHANGELOG.md
Approved by: martin.dieringer (maintainer)
PR: 271687