Build SDL3 for ReadTheDocs workflow #1102

Job	Run time
ruff	8s
sdist	2m 56s
mypy	30s
parse_sdl (macos-latest, 3.2.16)	26s
parse_sdl (windows-latest, 3.2.16)	1m 7s
test-docs	6m 42s
build-macos (cp310-*_universal2)	2m 21s
build-macos (pp310-*)	4m 33s
tox (ubuntu-latest)	4m 0s
build (ubuntu-latest, 3.10, x64)	7m 31s
build (ubuntu-latest, pypy-3.10, x64)	5m 40s
linux-wheels (x86_64, pp310-manylinux*)	4m 2s
build (windows-latest, pypy-3.10, x64)	3m 18s
linux-wheels (x86_64, cp310-manylinux*)	4m 15s
build (windows-latest, pypy-3.10, x86)	4m 42s
linux-wheels (aarch64, pp310-manylinux*)	4m 39s
linux-wheels (aarch64, cp310-manylinux*)	4m 46s
build (windows-latest, 3.10, x86)	2m 39s
build (windows-latest, 3.10, x64)	3m 31s
publish	0s
	1h 7m 46s

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