chore(helm): update image docker.io/fireflyiii/core digest to ac842bc (#32889)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/fireflyiii/core](https://redirect.github.com/firefly-iii/docker)
([source](https://dev.azure.com/Firefly-III/_git/MainImage)) | digest |
`b368f3b` -> `ac842bc` |

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charts/stable/fireflyiii/Chart.yaml

@@ -40,4 +40,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/fireflyiii
   - https://hub.docker.com/r/fireflyiii/core
 type: application
-version: 28.0.2
+version: 28.0.3

charts/stable/fireflyiii/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: docker.io/fireflyiii/core
   pullPolicy: IfNotPresent
-  tag: version-6.2.9@sha256:b368f3ba77a34314da1e4925a1450f2f9cfaa5a173ef12683af2940223d7a428
+  tag: version-6.2.9@sha256:ac842bc5b7a66f40f9680b27e03f9155907741ce8940bb3a3ceffa99f43b200a
 securityContext:
   container:
     readOnlyRootFilesystem: false