chore(deps): update container image itzg/mc-backup to latest@fbab303 by renovate (#26698)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| itzg/mc-backup | digest | `5ecd2cb` -> `fbab303` |

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charts/stable/minecraft-java/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://hub.docker.com/r/itzg/mc-backup
   - https://hub.docker.com/r/itzg/minecraft-server
 type: application
-version: 11.0.5
+version: 11.0.6

charts/stable/minecraft-java/values.yaml

@@ -52,7 +52,7 @@ j8alpineImage:
   pullPolicy: Always
 mcBackupImage:
   repository: itzg/mc-backup
-  tag: latest@sha256:5ecd2cb5834ce1b880ae174d35236c7653f49e187929b020cfb865c1c68500f5
+  tag: latest@sha256:fbab3036e047d3e449c8773ba0dc69be1532ef704ea385c9166e768baa012c97
   pullPolicy: Always
 
 service: