Prepare 19.4.0 release. #1259

Job	Run time
ruff	7s
sdist	3m 36s
mypy	27s
parse_sdl (windows-latest, 3.2.16)	34s
parse_sdl (macos-latest, 3.2.16)	22s
test-docs	4m 4s
build (windows-latest, pypy-3.10, x86)	3m 17s
linux-wheels (aarch64, cp310-manylinux*)	3m 54s
build (windows-latest, pypy-3.10, x64)	4m 23s
build (ubuntu-latest, 3.10, x64)	5m 55s
tox (ubuntu-latest)	3m 33s
linux-wheels (x86_64, cp310-manylinux*)	4m 8s
build (ubuntu-latest, pypy-3.10, x64)	4m 34s
linux-wheels (x86_64, pp310-manylinux*)	3m 23s
linux-wheels (aarch64, pp310-manylinux*)	3m 34s
build (windows-latest, 3.10, x64)	2m 37s
build-macos (pp310-*)	3m 39s
build-macos (cp310-*_universal2)	1m 48s
build (windows-latest, 3.10, x86)	2m 52s
pyodide	5m 31s
publish	0s
	1h 2m 18s

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