CI: Fix checkout version tag

[juleswg23]

Summary

This resolves the checkout grabbing the wrong tag, as per this stackOverflow thread: https://stackoverflow.com/a/68959339

Related GitHub Issues and PRs

Closes #760

Checklist

• I understand and agree to the Code of Conduct.
• I have followed the Style Guide for Python Code as best as possible for the submitted code.
• I have added pytest unit tests for any new functionality.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.45%. Comparing base (654757a) to head (d64ede6).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #768   +/-   ##
=======================================
  Coverage   91.45%   91.45%           
=======================================
  Files          47       47           
  Lines        5558     5558           
=======================================
  Hits         5083     5083           
  Misses        475      475           

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[juleswg23]

This is needed for #759 to build. I'm happy to make this a separate PR, or keep it lumped in with #759.