chore(deps): update container image ghcr.io/linuxserver/freshrss to 1.23.1@549562f by renovate (#21125)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[ghcr.io/linuxserver/freshrss](https://togithub.com/linuxserver/docker-freshrss/packages)
([source](https://togithub.com/linuxserver/docker-freshrss)) | digest |
`717d109` -> `549562f` |

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This PR has been generated by [Renovate
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charts/stable/freshrss/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/freshrss
   - https://ghcr.io/linuxserver/freshrss
 type: application
-version: 18.8.14
+version: 18.8.15

charts/stable/freshrss/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: ghcr.io/linuxserver/freshrss
   pullPolicy: IfNotPresent
-  tag: 1.23.1@sha256:717d1093dc7ee781e493355c6ec04c11af99d5d434c4717b694df1e3a7bacfc0
+  tag: 1.23.1@sha256:549562feadc202cd5b97af6baeeaa24e596bc0fbadabdab08656e9b4257c65a6
 securityContext:
   container:
     readOnlyRootFilesystem: false