submodule: update chronosync

Change-Id: I506b2d7dca3f91d6ad6be5022090423e535fff49
diff --git a/ChronoSync b/ChronoSync
index 69a13f8..31ad44c 160000
--- a/ChronoSync
+++ b/ChronoSync
@@ -1 +1 @@
-Subproject commit 69a13f8698532148a372210879fe9eeec5eef757
+Subproject commit 31ad44cf147e736968f0cb0bffd9006f6611078f