ci: updated to actions/upload-artifact v4

[ErikBjare]

Fixes https://github.com/ActivityWatch/aw-webui/pull/560

Works around https://github.com/actions/upload-artifact/issues/478

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:rocket: This description was created by Ellipsis for commit 57c378bbc04215f3855c2023d0122b7d6b7b0d74

Summary:

Updated GitHub Actions workflows to use actions/upload-artifact@v4, enhancing artifact management and naming in CI processes.

Key points:

• Updated actions/upload-artifact to v4 in /github/workflows/comment.yml and /github/workflows/nodejs.yml.
• Modified artifact handling in comment.yml to include unzipping and cleanup within the script.
• Introduced dynamic naming of artifacts in nodejs.yml based on matrix variables.

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Generated with :heart: by ellipsis.dev

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 26.15%. Comparing base (021acc4) to head (57c378b).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #574 +/- ## ======================================= Coverage 26.15% 26.15% ======================================= Files 27 27 Lines 1629 1629 Branches 285 285 ======================================= Hits 426 426 + Misses 1177 1145 -32 - Partials 26 58 +32 ```

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[ErikBjare]

Needs to be merged before changes to the comment workflow are used, unlike: https://github.com/ActivityWatch/aw-webui/actions/runs/9044104886