upgrade to libsodium 1.0.20-stable #468

Job	Run time
Linux docs	1m 7s
Linux meta	1m 25s
Python 3.6 on macos-13	2m 55s
Linux mypy	57s
Python 3.12 on macos-13	2m 57s
Linux pypy3	2m 46s
Python 3.12 (minimal build) on macos-13	3m 12s
Linux pypy3	2m 50s
Python 3.12 on macos-latest	1m 34s
Python 3.6 on Windows x86	2m 34s
Linux py36	1m 54s
Python 3.12 (minimal build) on macos-latest	1m 39s
Python 3.7 on Windows x86	2m 59s
Linux py37	1m 56s
Python 3.8 on Windows x86	2m 57s
Linux py38	1m 37s
Python 3.9 on Windows x86	3m 45s
Linux py39	1m 35s
Python 3.10 on Windows x86	3m 11s
Linux py310	1m 49s
Python 3.11 on Windows x86	3m 14s
Linux py311	1m 38s
Python 3.12 on Windows x86	4m 11s
Linux py312	1m 45s
Python 3.6 on Windows x64	3m 19s
Linux py312 system	2m 17s
Python 3.7 on Windows x64	1m 57s
Linux py312 minimal	1m 39s
Python 3.8 on Windows x64	3m 38s
Python 3.9 on Windows x64	2m 18s
Python 3.10 on Windows x64	2m 31s
Python 3.11 on Windows x64	2m 27s
Python 3.12 on Windows x64	2m 38s
	1h 19m 11s

Provide feedback