chore(minecraft-java): update image docker.io/itzg/mc-backup digest to cfd98b6 (#43288)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/itzg/mc-backup | digest | `3ea7665` -> `cfd98b6` |

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charts/stable/minecraft-java/Chart.yaml

@@ -39,5 +39,5 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/stable/minecraft-java
   - https://hub.docker.com/r/itzg/mc-backup
 type: application
-version: 23.56.15
+version: 23.56.16
 

charts/stable/minecraft-java/values.yaml

@@ -52,7 +52,7 @@ j8alpineImage:
   pullPolicy: Always
 mcBackupImage:
   repository: docker.io/itzg/mc-backup
-  tag: latest@sha256:3ea7665d2011a4b2e92c6ec0a330f80ebc6c890a6da5f024f64a2fb4b65c4ada
+  tag: latest@sha256:cfd98b690b29e63d355dc6e3a3ff4657c7276c304e11d75ba723a347b2646b3f
   pullPolicy: Always
 
 service: