Just because you can’t see an update doesn’t mean it’s been withdrawn. You can also install an old version of Nextcloud and won’t see any updates to a newer version, for example:
$ php updater.phar
Current version is 31.0.1.
No update available.
Nothing to do.
32.0.8 is also still in the update server configuration, at least in the public configuration on GitHub. It could also be that the update server (https://updates.nextcloud.com/updater_server) is broken. My wild guess would be: something on the update server is broken/down, but today is a public holiday and Nextcloud GmbH will fix it tomorrow 