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Jacob Wujciak-Jens authored and GitHub committed 6c675c35349
ARROW-15481: [R] [CI] Add a crossbow job that mimics CRAN's old macOS (#13925) Authored-by: Jacob Wujciak-Jens <jacob@wujciak.de> Signed-off-by: Neal Richardson <neal.p.richardson@gmail.com>