PYTHON-5212 [v4.12] Do not hold Topology lock while resetting pool #2216

Job	Run time
Build wheels for manylinux_x86_64	2m 21s
Make SDist	43s
Build wheels for manylinux_aarch64	11m 23s
Build wheels for manylinux_ppc64le	10m 52s
Build wheels for manylinux_s390x	11m 18s
Build wheels for manylinux_i686	2m 34s
Build wheels for win_amd6	5m 49s
Build wheels for win32	6m 9s
Build wheels for macos	3m 57s
Download Wheels	7s
	55m 13s

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