PYTHON-4805 Migrate test_connections_survive_primary_stepdown_spec.py to async #761

Job	Run time
Build wheels for manylinux_x86_64	2m 17s
Build wheels for manylinux_aarch64	3m 16s
Make SDist	28s
Build wheels for manylinux_ppc64le	3m 17s
Build wheels for manylinux_s390x	3m 17s
Build wheels for manylinux_i686	2m 38s
Build wheels for win_amd6	3m 12s
Build wheels for win32	3m 10s
Build wheels for macos	2m 52s
Download Wheels	1s
	24m 28s

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