build: workaround TLS timeouts in ftp.gnu.org

patches/sources

@@ -5,8 +5,8 @@ PKG_CONFIG_SRC="https://pkgconfig.freedesktop.org/releases/pkg-config-0.29.2.tar
 
 # Source files for qemu
 FFI_SRC="https://github.com/libffi/libffi/releases/download/v3.5.0/libffi-3.5.0.tar.gz"
-ICONV_SRC="https://ftp.gnu.org/gnu/libiconv/libiconv-1.16.tar.gz"
-GETTEXT_SRC="https://ftp.gnu.org/gnu/gettext/gettext-0.22.5.tar.gz"
+ICONV_SRC="http://ftp.gnu.org/gnu/libiconv/libiconv-1.16.tar.gz"
+GETTEXT_SRC="http://ftp.gnu.org/gnu/gettext/gettext-0.22.5.tar.gz"
 PNG_SRC="https://ftp.osuosl.org/pub/blfs/conglomeration/libpng/libpng-1.6.48.tar.xz"
 JPEG_TURBO_SRC="https://ftp.osuosl.org/pub/blfs/conglomeration/libjpeg-turbo/libjpeg-turbo-1.5.3.tar.gz"
 GLIB_SRC="https://download.gnome.org/sources/glib/2.83/glib-2.83.0.tar.xz"