chore(helm): update image ghcr.io/open-webui/open-webui digest to 9e1197c (#28394)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/open-webui/open-webui | digest | `6ab343d` -> `9e1197c` |

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 - At any time (no schedule defined).

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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/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: 7.4.8
+version: 7.4.9

charts/stable/ollama/values.yaml

@@ -9,7 +9,7 @@ rocmImage:
 uiImage:
   repository: ghcr.io/open-webui/open-webui
   pullPolicy: IfNotPresent
-  tag: latest@sha256:6ab343db4e8dce91e303d51c4882efada46d89dcfd3554f4993b7fafd05d2899
+  tag: latest@sha256:9e1197c7b859e23bf803e2da1f647ff456303960279dc90bd9f6583cb8b2b60b
 
 securityContext:
   container: