Just because you can’t see an update doesn’t mean it’s been withdrawn.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.
It could also be that the update server (https://updates.nextcloud.com/updater_server) is broken. 32.0.8 is also still in the update server configuration, at least in the public configuration on GitHub. 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 