Dear Guix,

I'd like to update python-rdflib to 7.0.0. When building the reverse-
dependent packages, I found that python-prov and cwltool don't support
version 7.  So the attached patch keeps 6.1.1 around but upgrades all
the others. I built the following packages successful after the
upgrade:
- carla
- ardour
- zeitgeist
- python-schema-salad
- python-sparqlwrapper
- python-cfgraph
- python-pyrdfa3
- python-sparqlkernel

The following package failed to build, but I believe it's unrelated to
the upgrade:
- python-pytorch-geometric

Keeping python-prov and cwltool at python-rdflib-6 doesn't affect the
successful builds of these packages.  So I believe the impact is
minimal.

Let me know if/what I can do to improve the patch.
Thank you for your time in advance.

Kind regards,
Roel Janssen