bump upload-artifact@v4

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
         with:
           sdk-channel: release
       - name: Upload app artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ github.event.repository.name }}-${{ steps.build-app.outputs.suffix }}
           path: ${{ steps.build-app.outputs.fap-artifacts }}