Upgrade to use SDL3 version of libtcod #981

Job	Run time
sdist	10s
mypy	20s
ruff	5s
tox (ubuntu-latest)	20s
tox (windows-latest)	24s
parse_sdl (windows-latest, 2.30.0)	16s
parse_sdl (windows-latest, 2.0.16)	14s
build (windows-latest, 3.8, x86)	4m 30s
parse_sdl (windows-latest, 2.0.14)	20s
build (ubuntu-latest, 3.8, x64)	22s
parse_sdl (macos-latest, 2.30.0)	16s
linux-wheels (x86_64, pp38-manylinux*)	59s
linux-wheels (aarch64, cp38-manylinux*)	1m 3s
build (windows-latest, pypy-3.8, x86)	3m 10s
parse_sdl (macos-latest, 2.0.16)	16s
test-docs	7s
build (ubuntu-latest, pypy-3.8, x64)	30s
linux-wheels (aarch64, pp38-manylinux*)	1m 4s
build (windows-latest, pypy-3.8, x64)	4m 12s
build (windows-latest, 3.8, x64)	2m 26s
build-macos (pp38-*)	22s
linux-wheels (x86_64, cp38-manylinux*)	47s
parse_sdl (macos-latest, 2.0.14)	16s
build-macos (cp38-*_universal2)	18s
publish	0s
	22m 47s

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