Updated service to use new XOS core version: 2.1.22

Change-Id: I4a060be933bea84ffc67b033bdf6f8885ae81995
diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index e8dd176..d85ee7b 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -16,7 +16,7 @@
 # docker build -t xosproject/rcord-synchronizer:candidate -f Dockerfile.synchronizer .
 
 # xosproject/rcord-synchronizer
-FROM xosproject/xos-synchronizer-base:2.1.12
+FROM xosproject/xos-synchronizer-base:2.1.22
 
 COPY xos/synchronizer /opt/xos/synchronizers/rcord
 COPY VERSION /opt/xos/synchronizers/rcord/