build

Revert "Revert: debian:testing-20240926-slim" #716

Job	Run time
spellcheck	8s
reuse-check	7s
linux-glibc-debian-testing-llvm	5s
shellcheck	6s
linux-glibc-debian-bookworm-gcc	5m 9s
linux-glibc-debian-bookworm-llvm	5m 6s
linux-glibc-debian-testing-gcc	7s
linux-musl-alpine-gcc	3m 17s
linux-musl-alpine-llvm	3m 9s
linux-musl-debian-bookworm-gcc	4m 53s
linux-musl-debian-bookworm-llvm	4m 54s
linux-musl-debian-testing-gcc	4s
linux-musl-debian-testing-llvm	3s
linux-musl-from-mac	7m 54s
mac-clang	3m 48s
mac-gcc	2m 59s
mac-llvm	3m 37s
win-gcc	4s
win-llvm	3s
win-llvm-from-mac	7m 1s
	52m 34s

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