chore(base-cluster/dependencies): update docker.io/grafana/grafana-image-renderer docker tag to v3.12.9

Author: renovate[bot]

charts/base-cluster/values.yaml

@@ -85,7 +85,7 @@ global:
     image:
       registry: docker.io
       repository: grafana/grafana-image-renderer
-      tag: 3.12.6@sha256:07ee43cbdad94ea836fc13f9e8b628fa3eb282be5b07fe64fc7f06fbbba82854
+      tag: 3.12.9@sha256:6d8650aad54e3efcbe9992ca1bc06e1046c7c15567019d4d289273f60ef59656
   networkPolicy:
     type: none
     dnsLabels: