PYTHON-3636 MongoClient should perform SRV resolution lazily #1823

Job	Run time
Make SDist	35s
Build wheels for manylinux_x86_64	2m 23s
Build wheels for manylinux_aarch64	11m 14s
Build wheels for manylinux_ppc64le	10m 45s
Build wheels for manylinux_s390x	11m 1s
Build wheels for manylinux_i686	2m 33s
Build wheels for win_amd6	4m 59s
Build wheels for win32	4m 52s
Build wheels for macos	3m 33s
Download Wheels	9s
	52m 4s

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