fix(container): update image ghcr.io/cloudnative-pg/postgresql ( 17.2…

…-17 → 17.2-18 ) (#4812)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ghcr.io/cloudnative-pg/postgresql | patch | `17.2-17` -> `17.2-18` |

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Co-authored-by: repo-jeeves[bot] <106431701+repo-jeeves[bot]@users.noreply.github.com>

kubernetes/staging/apps/dbms/cloudnative-pg/cluster/cluster.yaml

@@ -9,7 +9,7 @@ metadata:
     app.kubernetes.io/name: postgres-db
 spec:
   # renovate: datasource=docker depName=ghcr.io/cloudnative-pg/postgresql versioning=redhat
-  imageName: ghcr.io/cloudnative-pg/postgresql:17.2-17
+  imageName: ghcr.io/cloudnative-pg/postgresql:17.2-18
   instances: 3
   primaryUpdateStrategy: unsupervised
   storage: