chore(helm): update image docker.io/searxng/searxng digest to 7837de6 (#33117)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/searxng/searxng | digest | `a207864` -> `7837de6` |

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/searxng/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/searxng
   - https://hub.docker.com/r/searxng/searxng
 type: application
-version: 9.5.17
+version: 9.5.18

charts/stable/searxng/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: docker.io/searxng/searxng
-  tag: latest@sha256:a207864a25a90976b1041d13a358986b6352342a879c90f260798f8dc2188911
+  tag: latest@sha256:7837de69774c17bf1ed074fba61e5381277b443ffad7614887ae7e84943ee252
 workload:
   main:
     podSpec: