We want to support PHP8.2 for Nextcloud 26. At the time of writing server refuses to install with anything newer than 8.1. With a little hack you can still run automated tests.
The version check is performed in
lib/versioncheck.php. If you swap out the file with an empty php script, Nextcloud will install and run on CI. You can find a Github workflow at nextcloud_sentry/test.yml at ee136bf557217bb4f19b51cb7b18dba6b5c19c41 · ChristophWurst/nextcloud_sentry · GitHub
May this give app maintainers a bit of a headstart on the support the latest PHP version.