builder update: better ubuntu/deb distro naming in package versioning

diff --git a/builder b/builder
index 16bc1604c48821c12b708d7afa88d9612ebdd0da..f2c8c68dccb142152d8e2120b29e597e24222ddc 160000 (submodule)
--- a/builder
+++ b/builder
@@ -1 +1 @@
-Subproject commit 16bc1604c48821c12b708d7afa88d9612ebdd0da
+Subproject commit f2c8c68dccb142152d8e2120b29e597e24222ddc