upgrade to Nov 30, 2023 libsodium 1.0.19-stable release #437

Job	Run time
Python 3.7 on macOS	36s
Python 3.7 on Windows x86	2m 50s
Python 3.12 on macOS	47s
Linux docs	28s
Python 3.12 (minimal build) on macOS	32s
Python 3.8 on Windows x86	2m 50s
Python 3.9 on Windows x86	3m 0s
Linux meta	26s
Python 3.10 on Windows x86	2m 44s
Linux mypy	25s
Python 3.11 on Windows x86	3m 15s
Linux pypy3	36s
Python 3.12 on Windows x86	2m 41s
Linux pypy3	35s
Python 3.7 on Windows x64	2m 16s
Linux py37	23s
Python 3.8 on Windows x64	1m 49s
Linux py38	22s
Python 3.9 on Windows x64	1m 46s
Linux py39	20s
Python 3.10 on Windows x64	1m 44s
Linux py310	24s
Python 3.11 on Windows x64	1m 48s
Linux py311	21s
Python 3.12 on Windows x64	1m 49s
Linux py312	28s
Linux py312 system	36s
Linux py312 minimal	30s
	36m 21s

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