set download artifact version to v3

[OliverMKing]

Description

Need to set download artifact version to v3 to match the upload artifact version. Can't use v4 because they switched the scope. https://github.blog/changelog/2023-12-14-github-actions-artifacts-v4-is-now-generally-available/

It's currently broken because v4 came out.

We should pin to sha anyways. Not sure why this was ever set to main. Security best practice is to use the sha and it's bad to pin to main because it breaks if a breaking change is ever made (like this).

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

How Has This Been Tested?

Workflows

Checklist:

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

[coveralls]

Pull Request Test Coverage Report for Build 7399489898

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 80.92%

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Totals
Change from base Build 7064629368:	0.03%
Covered Lines:	2990
Relevant Lines:	3695

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💛 - Coveralls