feat(container): update image ghcr.io/cloudnative-pg/postgresql ( 18.4 ➔ 18.6 )

[mortyops]

This PR contains the following updates:

Package	Update	Change
ghcr.io/cloudnative-pg/postgresql	minor	18.4 → 18.6

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[mortyops]

--- kubernetes/apps/downloads/reading-glasses/app Kustomization: downloads/reading-glasses CronJob: downloads/reading-glasses-cache-prune

+++ kubernetes/apps/downloads/reading-glasses/app Kustomization: downloads/reading-glasses CronJob: downloads/reading-glasses-cache-prune

@@ -60,13 +60,13 @@

                   key: POSTGRES__PASSWORD
                   name: reading-glasses-secret
             - name: PGSSLMODE
               value: prefer
             - name: PGCONNECT_TIMEOUT
               value: '10'
-            image: ghcr.io/cloudnative-pg/postgresql:18.4
+            image: ghcr.io/cloudnative-pg/postgresql:18.6
             imagePullPolicy: IfNotPresent
             name: prune
             resources:
               limits:
                 memory: 256Mi
               requests: