ci: bump SDL2 to 2.32.0. This is the last major upgrade to SDL2 depen… #2819

Job	Run time
flatpak (su.xash.Engine.Compat.i386)	4m 1s
build (ubuntu-20.04, linux, amd64)	3m 6s
build (ubuntu-20.04, linux, i386)	3m 31s
build (ubuntu-20.04, linux, arm64, true)	4m 1s
build (ubuntu-20.04, linux, armhf, true)	3m 40s
build (ubuntu-20.04, linux, riscv64, true)	3m 22s
build (ubuntu-20.04, linux, ppc64el, true)	3m 51s
build (ubuntu-20.04, android, multiarch)	11m 42s
build (ubuntu-latest, nswitch, arm64)	3m 25s
build (ubuntu-latest, psvita, armv7hf)	7m 51s
build (windows-latest, win32, amd64)	2m 51s
build (windows-2019, win32, i386)	2m 30s
build (macos-14, apple, arm64)	1m 30s
build (macos-13, apple, amd64)	2m 49s
Upload releases	35s
	58m 45s

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