Try to fix `libiconv` linking issue #760

Job	Run time
Build Docker Image	0s
Build Docker Image (Windows)	0s
linux (x86_64-unknown-linux-musl, x86_64-musl)	1m 8s
macos	1s
linux (i686-unknown-linux-musl, i686-musl)	1m 8s
linux (aarch64-unknown-linux-musl, aarch64-musl)	1m 21s
windows (x64, x86_64-pc-windows-msvc)	1m 54s
linux (armv7-unknown-linux-musleabihf, armv7-musleabihf)	1m 7s
windows (x86, i686-pc-windows-msvc)	2m 11s
linux (armv7-unknown-linux-musleabi, armv7-musleabi)	1m 15s
windows (arm64, aarch64-pc-windows-msvc)	3m 24s
Release	1s
	13m 30s

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