Bump to 3.20 #1865

Job	Run time
Build ARM binary (self-hosted, Linux, ARM64, maerwald, armv7-linux-ghcup, 9.2.8, ARM, Debian)	1s
Build ARM binary (self-hosted, Linux, ARM64, maerwald, aarch64-linux-ghcup, 9.6.6, ARM64, Debian)	1s
Build linux binary (ubuntu-latest, i386-linux-ghcup, 8.10.7, 32)	20s
Build ARM binary (self-hosted, Linux, ARM64, maerwald, aarch64-linux-alpine-ghcup, 9.8.4, ARM64, ...	1s
Build linux binary (ubuntu-latest, x86_64-linux-ghcup, 9.8.4, 64)	18s
Build binary (FreeBSD)	26s
Build binary (Mac/Win) (self-hosted, macOS, ARM64, aarch64-apple-darwin-ghcup, 9.6.6, ARM64)	1s
Build binary (Mac/Win) (macOS-13, x86_64-apple-darwin-ghcup, 9.6.6, 64)	30s
Build binary (Mac/Win) (windows-latest, x86_64-mingw64-ghcup, 9.6.6, 64)	23s
Test ARM	1s
hls	1s
Test linux	1s
Test FreeBSD	1s
Test Mac/Win	1s
release	1s
	2m 7s

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