Small update to slurm_singularity's auto gpu detection and configuring setup.py to use networkx>=2.6,<3

[bryce-turner]

Small update to slurm_singularity's auto gpu detection and configuring setup.py to use networkx>=2.6,<3.

The gpu detection is a nice to have, but not required since the pipeline designer can and should --nv as part of the runner_args.

Networkx typically supports 3-4 major python releases, networkx 3.0 supports 3.8, 3.9, 3.10, and 3.11, which overlaps our supported python versions, but it adds the following change that impacts our usage:

If you use the presence of the attribute _adj as a criteria for the object being a Graph instance, that code may need updating. The graph classes themselves now have an attribute _adj. So, it is possible that whatever you are checking might be a class rather than an instance.

We will plan to migrate networkx 3.x in a future jetstream release - particularly as certain python versions approach EOL.