NetworkX related CI checks fail for Python 3.8

[aryan26roy]

The networkX main tests keep failing in CI.

Checklist

• I have verified that the issue exists against the main branch.
• I have read the relevant section in the contribution guide on reporting bugs.
• I have checked the issues list for similar or identical bug reports.
• I have checked the pull requests list for existing proposed fixes.
• I have checked the CHANGELOG and the commit log to find out if the bug was already fixed in the main branch.
• I have included in the "Description" section below a traceback from any exceptions related to this bug.
• I have included in the "Related issues or possible duplicates" section beloew all related issues and possible duplicate issues (If there are none, check this box anyway).
• I have included in the "Environment" section below the name of the operating system and Python version that I was using when I discovered this bug.
• I have included in the "Environment" section below the output of pip freeze.
• I have included in the "Steps to reproduce" section below a minimally reproducible example.

Description

Python traceback:

Related issues or possible duplicates

• None

Environment

OS:

Python version:

Output of pip freeze:

Steps to reproduce

Example source: