use aligned buffer #93

Job	Run time
setup	1m 46s
build_deb (ubuntu:24.04, arm64)	36m 14s
build_deb (ubuntu:24.04, amd64)	1m 51s
build_deb (ubuntu:22.04, arm64)	11m 29s
build_deb (ubuntu:22.04, amd64)	2m 23s
build_deb (ubuntu:20.04, arm64)	10m 32s
build_deb (ubuntu:20.04, amd64)	2m 6s
build_deb (debian:bookworm, arm64)	10m 49s
build_deb (debian:bookworm, amd64)	2m 11s
build_deb (debian:bullseye, arm64)	10m 5s
build_deb (debian:bullseye, amd64)	2m 22s
cleanup	2s
	1h 31m 50s

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