🎣🏆 Repo cleanup and fix RGCN's hpo_default

[mberr]

Fix #1367

Also does some repo cleanup due to new versions of black & mypy.

Also fix #1363 by increasing the minimum class-resolver version.

[mberr]

the error seems to be equivalent to #1363, and this is something to fix in upstream https://github.com/cthoyt/class-resolver

EDIT: there is already an issue for this: cthoyt/class-resolver#58

[cthoyt]

New v0.4.3 release of class-resolver to PyPI contains the fix. See notes: https://github.com/cthoyt/class-resolver/releases/tag/v0.4.3

[cthoyt]

@mberr can we do a separate PR where we bump the minimum python version? Should we say py310 for now and be relatively progressive?

[mberr]

@mberr can we do a separate PR where we bump the minimum python version? Should we say py310 for now and be relatively progressive?

I would be fine with it (3.10 is also the default Python version in the current Ubuntu LTS).

Is there any reason why we need to bump the version?