chore(deps): update container image grafana/grafana-image-renderer to latest@9975402 by renovate (#25815)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| grafana/grafana-image-renderer | digest | `413819d` -> `9975402` |

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> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

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This PR has been generated by [Renovate
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charts/stable/grafana-image-renderer/Chart.yaml

@@ -33,4 +33,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/grafana-image-renderer
   - https://hub.docker.com/r/grafana/grafana-image-renderer
 type: application
-version: 7.1.7
+version: 7.1.8

charts/stable/grafana-image-renderer/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: grafana/grafana-image-renderer
-  tag: latest@sha256:413819daf3fe21d156bbe2a12678eb23cbd03ce1a5cd918421a2fc4882bc3227
+  tag: latest@sha256:9975402ecc5565fb6c6deb539c2f7c85170a5d68ee2b022de5d2f6b707fdeb35
 persistence: {}
 portal:
   open: