chore(deps): update postgres-monitoring (#1586)

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

Author: renovate[bot]

kustomization/overlays/prod/monitoring/cnpg/cluster.yml

@@ -9,7 +9,7 @@ spec:
   env:
     - name: TZ
       value: America/Los_Angeles
-  imageName: ghcr.io/cloudnative-pg/postgresql:18@sha256:766a236947fe082987bdb07d5a5bc9dca0f0ad4204d77de03cbefb14333b645d
+  imageName: ghcr.io/cloudnative-pg/postgresql:18@sha256:2f072060b5d03630781e11119b597f7020f06135bc29b030d8b6834c39b45e85
   instances: 3
   managed:
     services:

kustomization/overlays/prod/monitoring/kustomization.yml

@@ -34,7 +34,7 @@ helmCharts:
     valuesFile: prometheus-adapter-values.yml
 images:
   - name: postgres
-    newTag: 18@sha256:52e6ffd11fddd081ae63880b635b2a61c14008c17fc98cdc7ce5472265516dd0
+    newTag: 18@sha256:78481659c47e862334611ccdaf7c369c986b3046da9857112f3b309114a65fb4
   - name: registry.k8s.io/prometheus-adapter/prometheus-adapter
     newTag: v0.12.0@sha256:932eae60e2bcf9c4660d6442da066ef1a79b4ea7cc232c61c7303069216ca006
 namespace: monitoring