Bump rdflib from 4.2.1 to 5.0.0
Bump rdflib from 4.2.1 to 5.0.0

Bumps [rdflib](https://github.com/RDFLib/rdflib) from 4.2.1 to 5.0.0.
- [Release notes](https://github.com/RDFLib/rdflib/releases)
- [Changelog](https://github.com/RDFLib/rdflib/blob/master/CHANGELOG.md)
- [Commits](https://github.com/RDFLib/rdflib/compare/4.2.1...5.0.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
cmh2166/lc-reconcile