bump nextcloud to v28 (#129)

* bump nextcloud to v28

didn't tested it yet, if no one tests it until the weekend i'll test :)

* Fix Nextcloud v28 role tag

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Co-authored-by: Slavi Pantaleev <slavi@devture.com>

templates/requirements.yml

@@ -177,7 +177,7 @@
   name: netbox
   activation_prefix: netbox_
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-nextcloud.git
-  version: v27.1.4-4
+  version: v28.0.0-0
   name: nextcloud
   activation_prefix: nextcloud_
 - src: git+https://github.com/mother-of-all-self-hosting/ansible-role-outline.git