PYTHON-4815 Migrate test_discovery_and_monitoring.py to async #785

Job	Run time
Make SDist	39s
Build wheels for manylinux_x86_64	2m 35s
Build wheels for manylinux_aarch64	10m 14s
Build wheels for manylinux_ppc64le	9m 43s
Build wheels for manylinux_s390x	10m 10s
Build wheels for manylinux_i686	2m 31s
Build wheels for win_amd6	4m 12s
Build wheels for win32	5m 26s
Build wheels for macos	3m 32s
Download Wheels	6s
	49m 8s

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