chore(deps): update docker.io/grafana/grafana-image-renderer docker tag to v5.10.3

Author: renovate[bot]

kubernetes/apps/monitoring/grafana/app/renderer.yaml

@@ -30,7 +30,7 @@ spec:
           main:
             image:
               repository: docker.io/grafana/grafana-image-renderer
-              tag: v5.10.1@sha256:08cef302c548801a410cec3a1c94046281b01427b1518deb7b665a97814df2f8
+              tag: v5.10.3@sha256:7f776ebb20f82b9cd5940238da596da8caf26baf9025c2e0a991d23dd803a0e6
     service:
       main:
         controller: main