Update docs requirements. #1299

Job	Run time
list	18s
ci (macos-latest, tests-3.10)	1m 40s
ci (macos-latest, audit)	1m 31s
ci (macos-latest, tests-pypy3.10)	1m 39s
ci (macos-latest, tests-3.12)	2m 11s
ci (macos-latest, tests-3.11)	1m 34s
ci (macos-latest, build)	1m 53s
ci (macos-latest, style)	1m 42s
ci (macos-latest, typing)	1m 57s
ci (macos-latest, tests-3.9)	1m 48s
ci (macos-latest, tests-3.13)	1m 57s
ci (macos-latest, docs(doctest))	2m 17s
ci (macos-latest, docs(spelling))	1m 57s
ci (macos-latest, docs(style))	2m 8s
ci (macos-latest, docs(dirhtml))	2m 27s
ci (macos-latest, docs(man))	2m 7s
ci (macos-latest, docs(linkcheck))	1m 44s
ci (ubuntu-latest, tests-3.9)	28s
ci (ubuntu-latest, tests-pypy3.10)	38s
ci (ubuntu-latest, tests-3.10)	24s
ci (ubuntu-latest, tests-3.12)	22s
ci (ubuntu-latest, tests-3.11)	28s
ci (ubuntu-latest, docs(dirhtml))	1m 23s
ci (ubuntu-latest, tests-3.13)	25s
ci (ubuntu-latest, build)	43s
ci (ubuntu-latest, typing)	31s
ci (ubuntu-latest, style)	24s
ci (ubuntu-latest, audit)	23s
ci (ubuntu-latest, docs(man))	55s
ci (ubuntu-latest, docs(doctest))	1m 2s
ci (ubuntu-latest, docs(style))	2m 14s
ci (ubuntu-latest, docs(linkcheck))	50s
ci (ubuntu-latest, docs(spelling))	48s
packaging	16s
	43m 4s

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