Bump actions/upload-artifact from 4 to 5 (#99)

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 4 to 5.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v4...v5)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/all-pr-tests.yml

@@ -68,7 +68,7 @@ jobs:
       - name: Run Playwright tests
         run: npx playwright test
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v5
         if: ${{ !cancelled() }}
         with:
           name: playwright-report-php${{ matrix.php }}-wp${{ matrix.wordpress }}