Log Message:
php-nextcloud: Update to 19.0.0

Changelog:
Changes
Nextcloud Hub v19, code name home office, represents a big step forward
for remote collaboration in teams. This release brings document collaboration
to video chats, introduces password-less login and improves performance.

As this is a major release, the changelog is too long to put here. Users can
look at github milestones to find what has been merged. A quick overview
of what is new:

     password-less authentication and many other security measures
     Talk 9 with built-in office document editing courtesy of Collabora,
	a grid view & more
     MUCH improved performance,  Deck integration in Calendar,  guest
	account groups and more!