chore(ollama): update image ghcr.io/open-webui/open-webui digest to 18c1475 (#43080)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/open-webui/open-webui | digest | `c8e04b9` -> `18c1475` |

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<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi4xNy4wIiwidXBkYXRlZEluVmVyIjoiNDIuMTcuMCIsInRhcmdldEJyYW5jaCI6Im1hc3RlciIsImxhYmVscyI6WyJhcHAvb2xsYW1hIiwiYXV0b21lcmdlIiwicmVub3ZhdGUvY29udGFpbmVyIiwidHlwZS9kaWdlc3QiXX0=-->

Signed-off-by: Alfred Göppel <43101280+alfi0812@users.noreply.github.com>
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charts/stable/ollama/Chart.yaml

@@ -40,5 +40,4 @@ sources:
   - https://github.com/trueforge-org/truecharts/tree/master/charts/stable/ollama
   - https://hub.docker.com/r/ollama/ollama
 type: application
-version: 8.19.15
-
+version: 8.19.16

charts/stable/ollama/values.yaml

@@ -9,7 +9,7 @@ rocmImage:
 uiImage:
   repository: ghcr.io/open-webui/open-webui
   pullPolicy: IfNotPresent
-  tag: latest@sha256:c8e04b9319257448fa4e7ad140cb6596994217ec83d6e7656ccba649bf557318
+  tag: latest@sha256:18c1475e636245e2f439b59b4a2b38e1965c881856092d21e5efc38da7e1dac3
 
 securityContext:
   container: