Update gammarus

Change-Id: I0aeaacd3729166f5d540116f504d7cb74afe0d25
Depends-on: https://cesnet-gerrit-czechlight/c/CzechLight/gammarus/+/2355
Depends-on: https://gerrit.cesnet.cz/c/CzechLight/gammarus/+/2355
diff --git a/submodules/gammarus b/submodules/gammarus
index 9e9c645..beb67a2 160000
--- a/submodules/gammarus
+++ b/submodules/gammarus
@@ -1 +1 @@
-Subproject commit 9e9c6454e3340f05a1280314e6fb7d566d694f1a
+Subproject commit beb67a2d90d5ad793e14e8c6b3cd15bf5b601296