Update karateclub dependency for NetworkX 3.3 support

[ffl096]

Currently, TopoEmbedX is stuck on NetworkX 2.8 due to a transient dependency by the karateclub package. This has since been fixed on their end (benedekrozemberczki/karateclub#150).
This complicates installing TopoEmbedX, as the user most likely has a newer version of NetworkX installed in their environment already (e.g., simply because they installed TopoNetX). PIP does not downgrade the dependency automatically, leading to a dependency resolution error.

Notice that their PyPI release is severely outdated (from two years ago), but we fix karateclub to a specific (newer) commit right now anyway:

TopoEmbedX/pyproject.toml

Line 29 in 7fe74c9

"karateclub @ git+https://github.com/benedekrozemberczki/karateclub@d35e05526455599688f1c4dd92e397cf92316ae4",

What to do

• Update the pinned commit of karateclub to a commit after they updated their dependencies.
• Check that everything works.