Updated Chart version (deckhouse#71)

Author: Andrey Klimentyev

helm/charts/k8s-image-availability-exporter/Chart.yaml

@@ -1,5 +1,5 @@
 apiVersion: v1
-appVersion: "v0.3.0"
+appVersion: "v0.5.1"
 description: Application for monitoring the cluster workloads image presence in docker registry.
 name: k8s-image-availability-exporter
-version: "0.3.0"
+version: "0.5.1"