nixos/nextcloud: Fix services.nextcloud.settings.mail_smtpstreamoptions option type (#466299)

            '';

          };

          mail_smtpstreamoptions = lib.mkOption {

            type = lib.types.listOf lib.types.str;

            default = [ ];

            type = lib.types.attrsOf (lib.types.attrsOf lib.types.anything);

            default = { };

            description = ''

              This depends on `mail_smtpmode`. Array of additional streams options that will be passed to underlying Swift mailer implementation.

            '';