chore(deps): update container image ghcr.io/open-webui/open-webui to latest@15fe2fa by renovate (#27551)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/open-webui/open-webui | digest | `fb03153` -> `15fe2fa` |

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

@@ -35,4 +35,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/ollama
   - https://hub.docker.com/r/ollama/ollama
 type: application
-version: 7.4.2
+version: 7.4.3

charts/stable/ollama/values.yaml

@@ -9,7 +9,7 @@ rocmImage:
 uiImage:
   repository: ghcr.io/open-webui/open-webui
   pullPolicy: IfNotPresent
-  tag: latest@sha256:fb031537de21e32593b19b1cd5714e8ebc28d4a4b40a992d18c7a69311234e14
+  tag: latest@sha256:15fe2fa9554a897424f6d57972fcdf4d62de459e153eb2e724cf1882fe65cdbb
 
 securityContext:
   container: