PYTHON-5879 Skip coverage on macOS/Win64 encryption tests #4431

Job	Run time
Build wheels for manylinux_x86_64	2m 4s
Build wheels for manylinux_i686	2m 37s
Make SDist	50s
Build wheels for manylinux_ppc64le	12m 13s
Build wheels for win_arm64	6m 18s
Build wheels for win_amd6	4m 18s
Build wheels for win32	6m 14s
Build wheels for macos	3m 55s
Build wheels for manylinux_aarch64	13m 25s
Build wheels for manylinux_s390x	15m 38s
Download Wheels	11s
	1h 7m 43s

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