github: Upgrade GitHub actions that depend on deprecated Node.js versions

[bkeryan]

• This contribution adheres to CONTRIBUTING.md.

What does this Pull Request accomplish?

Upgrade actions/checkout to v4.

Upgrade actions/setup-python to v5.

Upgrade Gr1N/setup-poetry to v9.

Why should this Pull Request be merged?

Resolve these warnings:

The following actions use a deprecated Node.js version and will be forced to run on node20: actions/checkout@v3, actions/setup-python@v4, Gr1N/setup-poetry@v8. For more info: https://github.blog/changelog/2024-03-07-github-actions-all-actions-will-run-on-node20-instead-of-node16-by-default/

What testing has been done?

PR build

[github-actions]

Test Results

    34 files  ±0      34 suites  ±0   52m 14s ⏱️ - 1m 0s
 2 348 tests ±0   1 994 ✅ ±0    354 💤 ±0  0 ❌ ±0 
42 272 runs  ±0  36 020 ✅ ±0  6 252 💤 ±0  0 ❌ ±0 

Results for commit e5f23fe. ± Comparison against base commit 79df1b1.