use ${version} in source

system/extra/xz-utils/ympbuild

@@ -1,12 +1,13 @@
 #!/usr/bin/env bash
 name=xz-utils
 version=5.2.7
+release=1
 homepage='https://tukaani.org/xz/'
 description='lzma compression utilities'
 maintainer='kurth4cker'
 email='kurth4cker@tutanota.com'
 license=('GPLv2+')
-source=('https://tukaani.org/xz/xz-5.2.7.tar.gz')
+source=("https://tukaani.org/xz/xz-${version}.tar.gz")
 md5sums=('66f82a9fa24623f5ea8a9ee6b4f808e2')
 group=(system.extra)
 uses=(doc nls)