[VOL-3365] Move default helm to 3.2.4

Change-Id: I9c3a096e43affd4d965de055618d0236a95ce4a2
diff --git a/voltha b/voltha
index 87512fd..7709043 100755
--- a/voltha
+++ b/voltha
@@ -36,7 +36,7 @@
     exit
 }
 
-HELM_VERSION=${HELM_VERSION:-v2.14.3}
+HELM_VERSION=${HELM_VERSION:-v3.2.4}
 VOLTCTL_VERSION=${VOLTCTL_VERSION:-latest}
 KIND_VERSION=${KIND_VERSION:-v0.5.1}
 VK_RELEASE=${VK_RELEASE:-master}