Also keep in mind that even if auto update is on, it won't update until it considers the version stable:
To ensure the stability of self-hosted integration runtime, we release a new version each month and push an auto-update every three months, using a stable version from the preceding three months. So you may find that the autoupdated version is the previous version of the actual latest version. If you want to get the latest version, you can go to download center and do so manually. Additionally, auto-update to a new version is managed internally. You can't change it.