Update docker.io/bitnami/redis-exporter Docker tag to v1.66.0-debian-12-r3

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Diff for: appuio/redis/values.yaml

@@ -777,7 +777,7 @@ metrics:
     # -- Exporter image repository
     repository: bitnami/redis-exporter
     # --  Exporter image tag
-    tag: 1.32.0-debian-10-r16
+    tag: 1.66.0-debian-12-r3
     # --  Exporter pull policy
     pullPolicy: IfNotPresent
     ## Optionally specify an array of imagePullSecrets.