Updated service to use new XOS core version: 2.1.25

Change-Id: I27c1793b273e05404d5cbc39f7d9e02a3bc093a8
diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index 72d5765..647d1a0 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -16,7 +16,7 @@
 
 # xosproject/fabric-crossconnect-synchronizer
 
-FROM xosproject/xos-synchronizer-base:2.1.24
+FROM xosproject/xos-synchronizer-base:2.1.25
 
 COPY xos/synchronizer /opt/xos/synchronizers/fabric-crossconnect
 COPY VERSION /opt/xos/synchronizers/fabric-crossconnect/