Prepare release `2.8.1` #111

Job	Run time
release / build x86_64-unknown-linux-gnu	15m 11s
check / snforge-init	5m 22s
check / test linux x86-64	1h 42m 11s
release / build x86_64-unknown-linux-musl	15m 8s
check / test macos aarch64	49m 12s
release / build aarch64-unknown-linux-gnu	14m 54s
check / test windows x86-64	1h 40m 5s
release / build aarch64-unknown-linux-musl	15m 32s
release / build x86_64-apple-darwin	25m 40s
release / build aarch64-apple-darwin	57m 59s
release / build x86_64-pc-windows-msvc	26m 55s
release / checksums	6s
release / verify ubuntu-20.04 x86_64-unknown-linux-gnu	30s
release / verify ubuntu-22.04 x86_64-unknown-linux-gnu	24s
release / verify macos-14 aarch64-apple-darwin	26s
release / verify windows-2019 x86_64-pc-windows-msvc	1m 45s
draft release	16s
	7h 11m 36s

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