chore(helm): update image docker.io/petersem/posterr digest to f18cb73 (#35731)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/petersem/posterr | digest | `ff5c346` -> `f18cb73` |

Add the preset `:preserveSemverRanges` to your config if you don't want
to pin your dependencies.

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### Configuration

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🚦 **Automerge**: Enabled.

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rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
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charts/stable/posterr/Chart.yaml

@@ -36,5 +36,5 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/posterr
   - https://hub.docker.com/r/petersem/posterr
 type: application
-version: 10.5.3
+version: 10.5.4
 

charts/stable/posterr/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: docker.io/petersem/posterr
-  tag: latest@sha256:ff5c346bccf2fe3fb9716fc715ac9833f3505685191ad5b31bfc8e51edf867f3
+  tag: latest@sha256:f18cb73ff37f8d515a465757f03d17f253805a6a7689e83c46d891419fc0fc93
 service:
   main:
     ports: