chore(ci): update all remaining GitHub actions v3 packages to v4

[pront]

Summary

Recently GitHub published this deprecation notice: https://github.blog/changelog/2024-04-16-deprecation-notice-v3-of-the-artifact-actions/

This PR updates the remaining users of @v3 packages to @v4. An unfortunate consequence is that we will stop verifying targets for Ubuntu 16 & 18, however we have no reason to expect any breakage there.

Change Type

• [ ] Bug fix
• [ ] New feature
• [x] Non-functional (chore, refactoring, docs)
• [ ] Performance

Is this a breaking change?

• [ ] Yes
• [x] No

How did you test this PR?

• https://github.com/vectordotdev/vector/actions/runs/11710613939
• https://github.com/vectordotdev/vector/actions/runs/11711422229

Does this PR include user facing changes?

• [ ] Yes. Please add a changelog fragment based on our guidelines.
• [x] No. A maintainer will apply the "no-changelog" label to this PR.

Checklist

• [ ] Please read our Vector contributor resources.

References

Ref: https://github.com/vectordotdev/vector/issues/21721

[datadog-vectordotdev[bot]]

Datadog Report

Branch report: pront/v3-actions-deprecation-fix Commit report: dde7f51 Test service: vector

:white_check_mark: 0 Failed, 7 Passed, 0 Skipped, 25.45s Total Time