GH-33779: [R] Nightly builds (R 3.5 and 3.6) failing due to field refs test#33780

thisisnic merged 1 commit intoapache:masterapache/arrow:masterfrom

thisisnic:GH-33779_string_as_factorsthisisnic/arrow:GH-33779_string_as_factorsCopy head branch name to clipboard