ci: fix Deckard integration so it throws errors up the stack

Fixes: #611

diff --git a/tests/integration/deckard b/tests/integration/deckard
index 1e2901a9b23858ad933b25e3ea154260e7f59361..6168c4f31eea1193c202cbb14fe7c34002b53765 160000 (submodule)
--- a/tests/integration/deckard
+++ b/tests/integration/deckard
@@ -1 +1 @@
-Subproject commit 1e2901a9b23858ad933b25e3ea154260e7f59361
+Subproject commit 6168c4f31eea1193c202cbb14fe7c34002b53765