chore(deps): update container image itzg/mc-backup to latest@9dcf689 by renovate (#20895)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| itzg/mc-backup | digest | `4b6b949` -> `9dcf689` |

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This PR has been generated by [Renovate
Bot](https://togithub.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4zMDMuMiIsInVwZGF0ZWRJblZlciI6IjM3LjMwMy4yIiwidGFyZ2V0QnJhbmNoIjoibWFzdGVyIiwibGFiZWxzIjpbImF1dG9tZXJnZSIsInVwZGF0ZS9kb2NrZXIvZ2VuZXJhbC9ub24tbWFqb3IiXX0=-->

charts/stable/minecraft-java/Chart.yaml

@@ -23,7 +23,7 @@ icon: https://truecharts.org/img/hotlink-ok/chart-icons/minecraft-java.webp
 keywords:
   - minecraft-java
   - minecraft
-kubeVersion: ">=1.24.0-0"
+kubeVersion: '>=1.24.0-0'
 maintainers:
   - name: TrueCharts
     email: info@truecharts.org
@@ -35,4 +35,4 @@ sources:
   - https://hub.docker.com/r/itzg/minecraft-server
   - https://hub.docker.com/r/itzg/mc-backup
 type: application
-version: 8.8.6
+version: 8.8.7

charts/stable/minecraft-java/values.yaml

@@ -60,7 +60,7 @@ j8j9Image:
   pullPolicy: Always
 mcBackupImage:
   repository: itzg/mc-backup
-  tag: latest@sha256:4b6b949e53e2a85ba93cbf84e39e139ad44d07a20a30fe30782b9d5fd2d8346c
+  tag: latest@sha256:9dcf68940961aafbda243b2c34fe1dd4c52bee03af7c3f6d73e031a54a30d5d2
   pullPolicy: Always
 
 service: