Prepare 19.4.0 release. #1260

Job	Run time
mypy	33s
ruff	8s
sdist	2m 54s
parse_sdl (macos-latest, 3.2.16)	23s
parse_sdl (windows-latest, 3.2.16)	37s
test-docs	4m 12s
linux-wheels (x86_64, cp310-manylinux*)	4m 1s
linux-wheels (x86_64, pp310-manylinux*)	3m 31s
tox (ubuntu-latest)	4m 24s
linux-wheels (aarch64, pp310-manylinux*)	3m 42s
build (ubuntu-latest, pypy-3.10, x64)	4m 59s
build-macos (pp310-*)	3m 52s
linux-wheels (aarch64, cp310-manylinux*)	4m 29s
build (windows-latest, pypy-3.10, x64)	3m 28s
build-macos (cp310-*_universal2)	1m 55s
build (windows-latest, 3.10, x86)	3m 0s
build (windows-latest, 3.10, x64)	2m 52s
pyodide	5m 27s
build (windows-latest, pypy-3.10, x86)	3m 33s
build (ubuntu-latest, 3.10, x64)	5m 5s
publish	39s
	1h 3m 44s

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