Add Alpine Linux support #144

Job	Run time
check (linux, amd64, x86_64-unknown-linux-gnu)	32s
check (linux, amd64-musl, x86_64-unknown-linux-musl)	32s
check (linux, arm64, aarch64-unknown-linux-gnu)	33s
check (darwin, amd64, x86_64-apple-darwin)	33s
check (darwin, arm64, aarch64-apple-darwin)	56s
check (windows, amd64, x86_64-pc-windows-msvc)	34s
check (windows, arm64, aarch64-pc-windows-msvc)	32s
clippy	30s
Build and save artifact (linux, amd64, x86_64-unknown-linux-gnu, ubuntu-latest)	1m 57s
Build and save artifact (linux, amd64-musl, x86_64-unknown-linux-musl, ubuntu-latest)	2m 8s
Build and save artifact (linux, arm64, aarch64-unknown-linux-gnu, ubuntu-latest)	2m 3s
Build and save artifact (darwin, amd64, x86_64-apple-darwin, macos-latest)	1m 16s
Build and save artifact (darwin, arm64, aarch64-apple-darwin, macos-latest)	1m 1s
Build and save artifact (windows, amd64, x86_64-pc-windows-msvc, windows-latest)	2m 30s
Build and save artifact (windows, arm64, aarch64-pc-windows-msvc, windows-latest)	2m 26s
	18m 3s

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