sa-update fails due to util_rb_3tld having no entry per line for sa versions < 3.4.1

sa-update fails due to util_rb_3tld needing one entry per line in 20_aux_tlds.cf on sa versions < 3.4.1 Especially this comment in the code is somewhat concerning ` 871 # 3rd level TLD list (SA 3.3+) 872 # 873 # There was a bug before 3.4.1(?), only one 3TLD per line works! 874 # 875 876 if (version >= 3.003000) ` log entries: `config: SpamAssassin failed to parse line, "us1.list-manage.com us2.list-manage.com us3.list-manage.com us4.list-manage.com us5.list-manage.com us6.list-manage.com us7.list-manage.com us8.list-manage.com us9.list-manage.com us10.list-manage.com us11.list-manage.com us12.list-manage.com us13.list-manage.com us14.list-manage.com us15.list-manage.com us16.list-manage.com us17.list-manage.com us18.list-manage.com us19.list-manage.com us20.list-manage.com us21.list-manage.com" is not valid for "util_rb_3tld", skipping: util_rb_3tld us1.list-manage.com us2.list-manage.com us3.list-manage.com us4.list-manage.com us5.list-manage.com us6.list-manage.com us7.list-manage.com us8.list-manage.com us9.list-manage.com us10.list-manage.com us11.list-manage.com us12.list-manage.com us13.list-manage.com us14.list-manage.com us15.list-manage.com us16.list-manage.com us17.list-manage.com us18.list-manage.com us19.list-manage.com us20.list-manage.com us21.list-manage.com`