Fixed iconv package name for alpine build

Author: Nick-S-2018

build-alpine

@@ -22,7 +22,7 @@ install_deps() {
     ln -s /usr/bin/objcopy "/usr/bin/${arch}-alpine-linux-musl-objcopy"
   export CROSS_COMPILE="/usr/bin/${arch}-alpine-linux-musl-"
 
-  apk add curl git autoconf bison re2c pkgconf zlib-dev zstd-dev openssl-libs-static openssl-dev zlib-static zlib-dev libiconv-dev
+  apk add curl git autoconf bison re2c pkgconf zlib-dev zstd-dev openssl-libs-static openssl-dev zlib-static zlib-dev gnu-libiconv-dev
 
   install_curl