chore(gha): bump dawidd6/action-download-artifact from 6 to 7

Bumps [dawidd6/action-download-artifact](https://github.com/dawidd6/action-download-artifact) from 6 to 7.
- [Release notes](https://github.com/dawidd6/action-download-artifact/releases)
- [Commits](dawidd6/action-download-artifact@v6...v7)

---
updated-dependencies:
- dependency-name: dawidd6/action-download-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/update_bpmn_visualization_version.yml

@@ -57,7 +57,7 @@ jobs:
       - name: Delete old Load and Navigation demo
         run: rm -rf demo/load-and-navigation
       - name: Download Load and Navigation demo ${{ env.VERSION }}
-        uses: dawidd6/action-download-artifact@v6
+        uses: dawidd6/action-download-artifact@v7
         with:
           github_token: ${{ secrets.GH_RELEASE_TOKEN }}
           repo: ${{ env.BUILD_DEMO_REPO }}