arch_boxes_sync: Pull the artifacts from GitLab's package registry

arch-boxes has decided to use GitLab's package registry instead of job artifacts[1].

[1] arch-boxes@d04c8274

roles/arch_boxes_sync/files/arch-boxes-sync.sh

@@ -52,8 +52,9 @@ for FILE in "${LATEST_VERSION}"/*; do
       sed "s/-${LATEST_VERSION:1}//" "${FILE}" > "${DEST}"
       touch --no-create --reference="${FILE}" "${DEST}"
     else
-      FILE="${FILE##*/}"
-      ln -s "${FILE}" "${DEST}"
+      SYMLINK="${FILE##*/}"
+      ln -s "${SYMLINK}" "${DEST}"
+      touch --no-create --reference="${FILE}" --no-dereference "${DEST}"
     fi
   fi
 done