bumping vOLT version

Change-Id: Ia9112fb08c522981a011ec23079353cfcf6ce360
diff --git a/xos-profiles/att-workflow/requirements.yaml b/xos-profiles/att-workflow/requirements.yaml
index 8824396..343b00e 100644
--- a/xos-profiles/att-workflow/requirements.yaml
+++ b/xos-profiles/att-workflow/requirements.yaml
@@ -24,7 +24,7 @@
   version: 2.1.3
   repository: file://../../xos-services/fabric
 - name: volt
-  version: 2.1.1
+  version: 2.1.3
   repository: file://../../xos-services/volt
 - name: fabric-crossconnect
   version: 1.1.1