upgrade to Nov 30, 2023 libsodium 1.0.19-stable release #439

Job	Run time
Linux docs	35s
Python 3.7 on macOS	34s
Linux meta	35s
Python 3.7 on Windows x86	3m 2s
Python 3.12 on macOS	42s
Linux mypy	28s
Python 3.8 on Windows x86	2m 48s
Python 3.12 (minimal build) on macOS	41s
Linux pypy3	37s
Python 3.9 on Windows x86	3m 4s
Linux pypy3	37s
Python 3.10 on Windows x86	2m 41s
Linux py37	24s
Python 3.11 on Windows x86	3m 9s
Linux py38	25s
Python 3.12 on Windows x86	3m 6s
Linux py39	21s
Python 3.7 on Windows x64	1m 44s
Linux py310	23s
Python 3.8 on Windows x64	2m 27s
Linux py311	23s
Python 3.9 on Windows x64	2m 12s
Linux py312	27s
Python 3.10 on Windows x64	2m 41s
Python 3.11 on Windows x64	2m 13s
Python 3.12 on Windows x64	1m 51s
Linux py312 system	37s
Linux py312 minimal	26s
	39m 13s

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