SEBA-450 Update Att-Workflow-Driver to use synchronizer library

Change-Id: I86740c694950e86f2d7afea6221d33e2aad8aeef
diff --git a/Dockerfile.synchronizer b/Dockerfile.synchronizer
index 25a36a5..0cf80bc 100644
--- a/Dockerfile.synchronizer
+++ b/Dockerfile.synchronizer
@@ -16,7 +16,7 @@
 
 # xosproject/att-workflow-driver-synchronizer
 
-FROM xosproject/xos-synchronizer-base:2.1.32
+FROM xosproject/xos-synchronizer-base:2.1.38
 
 COPY xos/synchronizer /opt/xos/synchronizers/att-workflow-driver
 COPY VERSION /opt/xos/synchronizers/att-workflow-driver/