chore(helm): update image docker.io/linuxserver/heimdall digest to c680f70 (#28339)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[docker.io/linuxserver/heimdall](https://redirect.github.com/linuxserver/docker-heimdall/packages)
([source](https://redirect.github.com/linuxserver/docker-heimdall)) |
digest | `820098a` -> `c680f70` |

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to pin your dependencies.

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charts/stable/heimdall/Chart.yaml

@@ -32,4 +32,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/heimdall
   - https://hub.docker.com/r/linuxserver/heimdall
 type: application
-version: 23.1.1
+version: 23.1.2

charts/stable/heimdall/values.yaml

@@ -1,6 +1,6 @@
 image:
   repository: docker.io/linuxserver/heimdall
-  tag: 2.6.1@sha256:820098a5c3ed20a312a6ebc5eca91181c038602f7d14cb57198da5323867c255
+  tag: 2.6.1@sha256:c680f706e0cfe29055bd5de243ea7540c12f53c419bf32eabe1e24cdcc78fd0d
   pullPolicy: IfNotPresent
 service:
   main: