Update seba-charts submodule

This fixes IEC-16, by switching the submodule to latest commit
containing the fix for freeradius.

Signed-off-by: Ciprian Barbu <ciprian.barbu@enea.com>
Change-Id: Iad940329e1b0f3288de65b5d2ba81e7038d39e8c

diff --git a/src/use_cases/seba_on_arm/src_repo/seba_charts b/src/use_cases/seba_on_arm/src_repo/seba_charts
index c38779c..ba78713 160000 (submodule)
--- a/src/use_cases/seba_on_arm/src_repo/seba_charts
+++ b/src/use_cases/seba_on_arm/src_repo/seba_charts
@@ -1 +1 @@
-Subproject commit c38779cc6479dee71e0a178c8401c932798450e5
+Subproject commit ba78713d21db592772a37aaf62b17fa805b145d4