chore(gha): bump actions/download-artifact from 3 to 4

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 3 to 4.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v3...v4)

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

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/check-projects.yml

@@ -59,7 +59,7 @@ jobs:
       - name: Download the bpmn-visualization development npm package
         if: ${{ matrix.bv-npm-package == 'development' }}
         id: 'download'
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: bpmn-visualization-npm-package
           path: ${{github.workspace}}/../bpmn-visualization-npm-package
@@ -95,7 +95,7 @@ jobs:
       pull-requests: write # surge-preview: PR comments
     steps:
       - name: Download all artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: tmp
       - name: Display structure of downloaded files