update-licenses.sh: keep custom licenses intact

Author: sk1p

update-licenses.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 for crate in libertem_dectris libertem_asi_tpx3 libertem_asi_mpx3 libertem_qd_mpx; do
-  (cd $crate && cargo bundle-licenses --format yaml --output THIRDPARTY.yml);
+  (cd $crate && cargo bundle-licenses --format yaml --output THIRDPARTY.yml --previous THIRDPARTY.yml);
 done