Signed-off-by: gentcys <iamchencong@gmail.com>

An error occurred while compiling on macOS, which described in https://github.com/tikv/tikv/issues/8659.
And it's fixed by https://github.com/rust-lang/libz-sys/commit/81026e996eb3804acf1e6898a3c1d791cdfb59f1.
This PR just update the version of dependency `libz-sys`.