CI: fix building docs #55

Job	Run time
build-source-dist	10m 34s
build-wheels (ubuntu-22.04, 3.8, x64)	23m 14s
build-wheels (ubuntu-22.04, 3.9, x64)	24m 3s
build-wheels (ubuntu-22.04, 3.10, x64)	23m 29s
build-wheels (ubuntu-22.04, 3.11, x64)	23m 45s
build-wheels (ubuntu-22.04, 3.12, x64)	23m 26s
build-wheels (ubuntu-22.04, 3.13-dev, x64)	23m 30s
build-wheels (windows-2022, 3.8, x86)	24m 2s
build-wheels (windows-2022, 3.8, x64)	21m 7s
build-wheels (windows-2022, 3.9, x86)	24m 11s
build-wheels (windows-2022, 3.9, x64)	21m 13s
build-wheels (windows-2022, 3.10, x86)	23m 45s
build-wheels (windows-2022, 3.10, x64)	21m 12s
build-wheels (windows-2022, 3.11, x86)	23m 31s
build-wheels (windows-2022, 3.11, x64)	22m 0s
build-wheels (windows-2022, 3.12, x86)	23m 3s
build-wheels (windows-2022, 3.12, x64)	21m 29s
build-wheels (windows-2022, 3.13-dev, x86)	23m 13s
build-wheels (windows-2022, 3.13-dev, x64)	22m 33s
build-wheels (macos-13, 3.8, x64)	33m 42s
build-wheels (macos-13, 3.9, x64)	52m 29s
build-wheels (macos-13, 3.10, x64)	38m 18s
build-wheels (macos-13, 3.11, x64)	41m 1s
build-wheels (macos-13, 3.12, x64)	37m 50s
build-wheels (macos-13, 3.13-dev, x64)	33m 18s
Upload wheels to snapshot-builds on wxpython.org	0s
Publish Python distribution to PyPI	0s
Create GitHub Release and upload source	0s
	10h 59m 58s

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