util: gtld_map autopull updates for 2021-04-21T21:31:31 UTC (#589)
util: gtld_map autopull updates for 2021-04-21T21:31:31 UTC (#589)

Co-authored-by: GitHub <1505422b2465e9a84f6fdfaa161078890c593f06@github.com>
zmap/zlint,zmap/zlint