PYTHON-5585 Set linkcheck_allow_unauthorized #2990

Job	Run time
Build wheels for manylinux_s390x	14m 53s
Build wheels for win_arm64	6m 45s
Build wheels for win32	5m 52s
Build wheels for manylinux_aarch64	14m 17s
Build wheels for macos	3m 57s
Build wheels for win_amd6	5m 30s
Make SDist	30s
Build wheels for manylinux_ppc64le	13m 42s
Build wheels for manylinux_x86_64	2m 10s
Build wheels for manylinux_i686	2m 27s
Download Wheels	12s
	1h 10m 15s

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