PYTHON-3636 MongoClient should perform SRV resolution lazily #1833

Job	Run time
Make SDist	30s
Build wheels for manylinux_x86_64	2m 12s
Build wheels for manylinux_aarch64	6m 7s
Build wheels for manylinux_ppc64le	6m 8s
Build wheels for manylinux_s390x	6m 8s
Build wheels for manylinux_i686	2m 23s
Build wheels for win_amd6	5m 27s
Build wheels for win32	5m 27s
Build wheels for macos	3m 45s
Download Wheels	1s
	38m 8s

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