PYTHON-3636 MongoClient should perform SRV resolution lazily #1835

Job	Run time
Make SDist	30s
Build wheels for manylinux_x86_64	2m 21s
Build wheels for manylinux_aarch64	11m 4s
Build wheels for manylinux_ppc64le	10m 58s
Build wheels for manylinux_s390x	11m 10s
Build wheels for manylinux_i686	2m 24s
Build wheels for win_amd6	5m 37s
Build wheels for win32	4m 28s
Build wheels for macos	5m 1s
Download Wheels	6s
	53m 39s

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