Update JUSH

diff --git a/externals/jush b/externals/jush
index 1d328338031478ae1ad0182c1e2b1eed64d9b1e2..bc2b8c15bf2f1cd65c86d05cc4e97994efed95be 160000 (submodule)
--- a/externals/jush
+++ b/externals/jush
@@ -1 +1 @@
-Subproject commit 1d328338031478ae1ad0182c1e2b1eed64d9b1e2
+Subproject commit bc2b8c15bf2f1cd65c86d05cc4e97994efed95be