`bpy` testing issues

[BradyAJohnston]

Reported the issue with bpy failure on exit here: https://projects.blender.org/blender/blender/issues/148959

Can improve and update the testing infrastructure if this gets resolved.

[BradyAJohnston]

Has been fixed in 5.0+ here: https://projects.blender.org/blender/blender/commit/bdeeb744bb804bfa6458f538c787910eac1dd592