Add kotlin kzips to build_kzip.bash

Test: Built the phony xref_kotlin target locally
Bug: 265428637
Change-Id: Ib5d6679f17ea45beea8302bc2257e1e4bd0ed7eb
diff --git a/build_kzip.bash b/build_kzip.bash
index 4c42048..850aeda 100755
--- a/build_kzip.bash
+++ b/build_kzip.bash
@@ -40,6 +40,7 @@
   merge_zips
   xref_cxx
   xref_java
+  xref_kotlin
   # TODO: b/286390153 - reenable rust
   # xref_rust
 )