Prepare release `2.8.4` #114

Job	Run time
check / snforge-init	5m 21s
release / build x86_64-unknown-linux-gnu	14m 24s
check / test linux x86-64	1h 48m 20s
release / build x86_64-unknown-linux-musl	15m 26s
check / test macos aarch64	57m 38s
check / test windows x86-64	1h 42m 15s
release / build aarch64-unknown-linux-gnu	15m 48s
release / build aarch64-unknown-linux-musl	15m 32s
release / build x86_64-apple-darwin	47m 39s
release / build aarch64-apple-darwin	1h 16m 45s
release / build x86_64-pc-windows-msvc	25m 52s
release / checksums	6s
release / verify ubuntu-20.04 x86_64-unknown-linux-gnu	26s
release / verify ubuntu-22.04 x86_64-unknown-linux-gnu	22s
release / verify macos-14 aarch64-apple-darwin	25s
release / verify windows-2019 x86_64-pc-windows-msvc	1m 35s
draft release	11s
	8h 8m 5s

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