chore(kopia): update image oci.trueforge.org/containerforge/kopia digest to a750f48 (#49801)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[oci.trueforge.org/containerforge/kopia](https://ghcr.io/trueforge-org/kopia)
([source](https://redirect.github.com/kopia/kopia)) | digest | `a70cfd5`
→ `a750f48` |

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charts/stable/kopia/Chart.yaml

@@ -36,5 +36,5 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/stable/kopia
   - https://kopia.io/docs/installation/#docker-images
 type: application
-version: 28.7.0
+version: 28.7.1
 

charts/stable/kopia/values.yaml

@@ -1,7 +1,7 @@
 # yaml-language-server: $schema=./values.schema.json
 image:
   repository: oci.trueforge.org/containerforge/kopia
-  tag: 0.23.1@sha256:a70cfd5b477899879e34b3dc57dc971fac3de4a61714360f98cd55f899b8f941
+  tag: 0.23.1@sha256:a750f48ccc0c76473ac86c02d9da37ef7346d135e2f8338dd6a9303412cc12c2
   pullPolicy: IfNotPresent
 service:
   main: