Fix tests

[AntObi]

Fix failing CI

Description

• Fix pymatgen requirement in setup.py
• Add python 3.12 to CI to check for compatability

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Pytest tests still pass locally

Test Configuration:

• Python version: 3.10.
• Operating System: Ubuntu 20.04

Reviewers

N/A

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.37%. Comparing base (b1fd360) to head (f5b2a66).

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #233      +/-   ##
==========================================
+ Coverage   73.27%   73.37%   +0.10%     
==========================================
  Files          24       24              
  Lines        1998     1998              
==========================================
+ Hits         1464     1466       +2     
+ Misses        534      532       -2     

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