VOL-4233: Update component version in voltha-helm-charts

Change-Id: I9558632f1cbc1fc426adcc4cfea00b3a764e47f7
diff --git a/voltha/Chart.yaml b/voltha/Chart.yaml
index a0797bd..98efd3b 100644
--- a/voltha/Chart.yaml
+++ b/voltha/Chart.yaml
@@ -14,7 +14,7 @@
 ---
 apiVersion: "v1"
 name: "voltha"
-version: "2.9.6"
+version: "2.9.7"
 description: "A Helm chart for Voltha based on K8S resources in Voltha project"
 keywords:
   - "onf"
@@ -33,4 +33,4 @@
 
 # app version applies to multiple components with potentially different
 # container image versions
-appVersion: "2.8-dev"
+appVersion: "2.8"