Re-enable code coverage report in Python 3.12

[Andrew-S-Rosen]

Details about the quacc environment

• quacc version: 0.4.5
• Python version: 3.12.1

What is the issue?

For some reason, the Python 3.12 GitHub actions runner is extremely slow when coverage reports are generated. This is not observed in Python 3.9, 3.10, or 3.11.

For now, I have removed coverage report generation in the GitHub Actions test suite for Python 3.12 until the issue is resolved.

[Andrew-S-Rosen]

Tracking: https://github.com/cclib/cclib/issues/1347