Bump ghcr.io/cloudnative-pg/postgresql

Bumps ghcr.io/cloudnative-pg/postgresql from 15.2 to 17.5.

---
updated-dependencies:
- dependency-name: ghcr.io/cloudnative-pg/postgresql
  dependency-version: '17.5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

applications/storagebox/charts/storagebox/values.yaml

@@ -127,7 +127,7 @@ postgres:
     instances: 1
     image:
       repository: ghcr.io/cloudnative-pg/postgresql
-      tag: '15.2'
+      tag: '17.5'
     imagePullPolicy: IfNotPresent
     imagePullSecrets: []
     initdb:
@@ -186,4 +186,4 @@ certmanager:
     enabled: true
 
 rqlite:
-  enabled: false
+  enabled: false