chore(etcd-backup): update release notes

Author: cfi2017

charts/kubernetes-etcd-backup/Chart.yaml

@@ -20,8 +20,5 @@ maintainers:
 annotations:
   artifacthub.io/containsSecurityUpdates: "true"
   artifacthub.io/changes: |
-    - kind: changed
-      description: "bump appVersion to v1.2.1"
-      links:
-        - name: "kubernetes-etcd-backup v1.2.1"
-          url: https://github.com/adfinis/kubernetes-etcd-backup/releases/tag/v1.2.1
+    - kind: fixed
+      description: "disallow concurrent job runs"