mediawiki: nixos.wiki: use ensureDBOwnership

2configs/deployment/nixos.wiki/mediawiki.module.nix

@@ -385,9 +385,7 @@ in
       package = mkDefault pkgs.mariadb;
       ensureDatabases = [ cfg.database.name ];
       ensureUsers = [
-        { name = cfg.database.user;
-          ensurePermissions = { "${cfg.database.name}.*" = "ALL PRIVILEGES"; };
-        }
+        { name = cfg.database.user; ensureDBOwnership = true; }
       ];
     };