Update some GitHub action versions. (PP-1285)

[tdilauro]

Description

• Updates the versions of some GitHub actions in our workflows.
• Also allows the Test workflow run on any push, rather than just on PRs.

Motivation and Context

I was having some trouble with hangs on the test.yml workflow and I was also seeing errors like this in the workflow logs:

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/setup-node@v3. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

[Jira PP-1285]

How Has This Been Tested?

• Some testing locally with act v0.2.62.
• Some parts need to be verified on GitHub.

Checklist:

• I have updated the documentation accordingly.
• All new and existing tests passed.

[jonathangreen]

Looks good!