CI: fix build on macos #681

Job	Run time
Docs (Detect cases where documentation links don't resolve and such)	19s
test (i686-pc-windows-msvc (stable), windows-2019, stable, i686-pc-windows-msvc, x86)	25s
test (x86_64-pc-windows-msvc (stable), windows-2019, stable, x86_64-pc-windows-msvc, x64)	23s
test (x86_64-pc-windows-msvc (beta), windows-2019, beta, x86_64-pc-windows-msvc, x64)	22s
test (x86_64-unknown-linux-gnu (stable), ubuntu-20.04, stable, x86_64-unknown-linux-gnu)	26s
test (x86_64-unknown-linux-gnu (beta), ubuntu-20.04, beta, x86_64-unknown-linux-gnu)	24s
test (x86_64-apple-darwin (stable), macos-14, stable, x86_64-apple-darwin)	20s
test (x86_64-apple-darwin (beta), macos-14, beta, x86_64-apple-darwin)	24s
	3m 3s

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