26.7.20260702

• Calendar/CalDAV/REST: wrong etag returned in CalDAV REPORT/PROPFIND or REST PUT/PATCH causing event updates being rejected
• Calendar/CalDAV: fix deleting of recurrances/parsing EXDATE
• Calendar/CalDAV: fix broken sync-token causing all events being synced / high server load
• Calendar/ActiveSync: using now automatic conversation from DateTime objects from our own z-push 2.5.0.2
• Mail: do not try to load Preview if no mail is selected
• Mail: prevent attempt to delete when no mail is selected
• OpenID: fix error (Class "League\OAuth2\Server\RequestTypes\AuthorizationRequest" not found) when confirming scopes
• PHP: fix 3 more usages of PHP 8.4+ syntax while requiring only PHP 8.2 (we recommend PHP 8.5!)