Update core

Signed-off-by: Florent Bruneau <florent.bruneau@polytechnique.org>

diff --git a/core b/core
index 42522e2..dbde94c 160000 (submodule)
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit 42522e2123d8092f2351bf03086024e6b6bb6ba8
+Subproject commit dbde94c9822ae12a2f28f4490422882169e2359e