chore(common): update image oci.trueforge.org/containerforge/scratch digest to 7d21939 (#45037)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[oci.trueforge.org/containerforge/scratch](https://ghcr.io/trueforge-org/scratch)
([source](https://hub.docker.com/_/ubuntu)) | digest | `83d8ba2` →
`7d21939` |

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charts/library/common/Chart.yaml

@@ -50,5 +50,5 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/library/common
   - https://hub.docker.com/_/
 type: library
-version: 28.30.1
+version: 28.30.2
 

charts/library/common/values.yaml

@@ -598,7 +598,7 @@ ubuntuImage:
 
 scratchImage:
   repository: oci.trueforge.org/containerforge/scratch
-  tag: "1.0.0@sha256:83d8ba29a1c289bccc51d934927b2c70a9ac00b8de26ee3c98869378f660d12f"
+  tag: "1.0.0@sha256:7d219395f2e87db99f3d59be27a28d04a053ddc8b7b50826d5cbd1769190f9fa"
   pullPolicy: IfNotPresent
 
 kubectlImage: