Merge pull request #9949 from nextcloud/backport/9946/stable26

[stable26] update information on migration from owncloud

Author: blizzz

admin_manual/maintenance/migrating_owncloud.rst

@@ -20,12 +20,11 @@ See the table below for a version map, where migrating is easily possible:
 | 10.0.5 or later   | 20.0.x (but at least 20.0.5) |
 +-------------------+------------------------------+
 
-.. note:: While we understand, that you want to migrate as soon as possible,
-          we also don't want to put your data at risk. Since we never know
-          what ownCloud changes in a future release, we only allow migrations
-          from versions that were released before our last maintenance release,
-          so we can at least perform some basic migration tests, before you
-          migrate your production instance.
+.. note:: Since ownCloud does not and will not support PHP 8.0 or higher, you
+          need to migrate from ownCloud 10.11.x to Nextcloud 25 and then
+          further upgrade from there. We urge you to migrate to Nextcloud
+          since PHP versions prior PHP8 are end of life, see
+          `<https://www.php.net/supported-versions.php>`_.
 
 1. First download the correct version of Nextcloud from our `older releases page <https://nextcloud.com/changelog/>`_,