Update charts to use newly released XOS 2.1.25 and related synchronizer images

Change-Id: I7cc172611aff1e2852a051557bf9f239096c193a
diff --git a/xos-services/volt/Chart.yaml b/xos-services/volt/Chart.yaml
index 0a8dad1..6b874b3 100644
--- a/xos-services/volt/Chart.yaml
+++ b/xos-services/volt/Chart.yaml
@@ -17,5 +17,5 @@
 description: A Helm chart for XOS's "olt-service" service
 icon: https://guide.opencord.org/logos/cord.svg
 
-version: 2.1.8
-appVersion: 2.1.13
+version: 2.1.9
+appVersion: 2.1.14