Upgrade actions/upload-artifact to v4

[poulch]

What type of PR is this?

• 💅 Refactor
• 🌟 Feature
• 🔥 Bug Fix
• 🔩 Maintenance
• 🛠 Workflow CI/CD changes

Now test workflows use updated actions for upload and download artifacts. In version 4 artifacts are immutable

The contents of an Artifact are uploaded together into an immutable archive. They cannot be altered by subsequent jobs unless the Artifacts are deleted and recreated (where they will have a new ID). Both of these factors help reduce the possibility of accidentally corrupting Artifact files.

As we using multiple shards I had to add unique name for each artifact and then use v4 for action for download artifact with natch patter and merge multiple props:

    - name: Download blob reports from GitHub Actions Artifacts
      uses: actions/download-artifact@v4
      with:
        path: all-blob-reports
        pattern: all-blob-reports-*
        merge-multiple: true

Migration guide: https://github.com/actions/upload-artifact/blob/main/docs/MIGRATION.md

Related Issues or Documents

• closes #

Usage Instructions, Screenshots, Recordings

Have you written tests?

• Yes!
• No... here is why: Writing tests are mandatory, please replace this text with why test are not included in this PR

[Optional] Description

[changeset-bot]

🦋 Changeset detected

Latest commit: 5c3fd4a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
saleor-dashboard	Patch

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