fix(deps): update container image ghcr.io/linuxserver/duckdns to latest (#15100)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/linuxserver/duckdns | digest | `9cbcfa0` -> `bebfb19` |

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charts/stable/duckdns/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v2
 kubeVersion: ">=1.16.0-0"
 name: duckdns
-version: 6.0.19
+version: 6.0.20
 appVersion: latest
 description: Duckdns is a free service which will point a DNS (sub domains of duckdns.org) to an IP of your choice.
 type: application

charts/stable/duckdns/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: ghcr.io/linuxserver/duckdns
   pullPolicy: IfNotPresent
-  tag: latest@sha256:9cbcfa035dc1655fc7d004ed7e05e8b952077a15e41dbe838da8df02e6a75c12
+  tag: latest@sha256:bebfb19c6f657ac0e8933842f94c60ce5cd87417bc528f5a3235185eabdb834d
 securityContext:
   container:
     runAsNonRoot: false