chore(songkong): update image docker.io/songkong/songkong digest to 52f66d6 (#44090)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/songkong/songkong | digest | `0f773aa` -> `52f66d6` |

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charts/stable/songkong/Chart.yaml

@@ -37,5 +37,5 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/stable/songkong
   - https://hub.docker.com/r/songkong/songkong
 type: application
-version: 8.13.14
+version: 8.13.15
 

charts/stable/songkong/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: docker.io/songkong/songkong
-  tag: latest@sha256:0f773aa736ada9834d0098b0dae5809f03f21f1d5c8e5dca61638f345d880eb7
+  tag: latest@sha256:52f66d64d60c7ded3dfbdc582fb916b86f2d79eace42520c0498b4f488521926
 persistence:
   music:
     enabled: true