nextcloud: longer startup timeout

it sometimes takes a long while to boot & signal being ready to systemd,
which will kill it after the timeout is reached, after which it's rinse
and repeat and yay for a boot loop.

parsons/nextcloud.nix

@@ -1,6 +1,7 @@
 { config, lib, pkgs, ... }:
 
 {
+  containers.nextcloud.timeoutStartSec = "10 min";
   hacc.containers.nextcloud = {
     config = { config, lib, pkgs, ... }: {
       environment.systemPackages = [ pkgs.htop ];