[Developer-portal] New staging release

Hi all, I have just pushed a new minor update into staging, it is mostly replacing `dnf install` with flatpak counterparts on orphaned packages (arduino and eclipse packages):   * https://developer.stg.fedoraproject.org/start/hw/arduino/about.html   * https://developer.stg.fedoraproject.org/tech/languages/dotnet/dotnet-ide....   * https://developer.stg.fedoraproject.org/tools/eclipse/about.html Fixup from contributor:   * https://developer.stg.fedoraproject.org/tech/languages/python/fastapi-ins... If there will be nothing wrong, I'll release it later this week. Thanks, Jarek