Work around issue with brew and opam #4703

Job	Run time
macOS 12 (x86_64)	3h 10m 33s
macOS 14 (arm64)	1h 55m 8s
combine-standalone	14s
publish-standalone	19s
test-standalone (macos-12)	16s
publish-standalone (-x86_64)	13s
publish-standalone (-arm64)	14s
test-standalone (macos-13)	13s
test-standalone (macos-14)	11s
test-standalone (macos-latest)	12s
test-standalone (-x86_64, macos-12)	16s
test-standalone (-x86_64, macos-13)	14s
test-standalone (-x86_64, macos-14)	16s
test-standalone (-x86_64, macos-latest)	15s
test-standalone (-arm64, macos-14)	10s
test-standalone (-arm64, macos-latest)	11s
macos-check-all	1s
	5h 8m 56s

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