nixos/selfoss: pin to php83

https://github.com/NixOS/nixpkgs/pull/394112#pullrequestreview-2726857849

Changed files
+1 -1
nixos
modules
services
web-apps
+1 -1
nixos/modules/services/web-apps/selfoss.nix
···
systemd.services.selfoss-update = {
serviceConfig = {
-
ExecStart = "${pkgs.php}/bin/php ${dataDir}/cliupdate.php";
+
ExecStart = "${pkgs.php83}/bin/php ${dataDir}/cliupdate.php";
User = "${cfg.user}";
};
startAt = "hourly";