Bump actions/upload-artifact from 3 to 4

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

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

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

.github/workflows/build.yml

@@ -103,15 +103,15 @@ jobs:
           cp '${{ github.workspace }}/LICENSE' '${{ github.workspace }}/project/addons/orchestrator/'
 
       - name: Upload artifact (Demo)
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.event.repository.name }}-demo-${{ matrix.identifier }}
           retention-days: 1
           path: |
             ${{ github.workspace }}/project/
 
       - name: Upload artifact (Plugin)
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.event.repository.name }}-plugin
           retention-days: 1