Bump pocket-id backup/dbInit image to postgres:18-alpine

rh's shared postgres cluster was upgraded to PostgreSQL 18; the
pg_dump client used for pocket-id's DB backup (and the one-shot
dbInit job) should match the server's major version.

pocket-id/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: pocket-id
 description: Pocket ID Helm chart
 type: application
-version: 0.1.11
+version: 0.1.12
 appVersion: "2.14.0"
 annotations:
   version-source: github-release:pocket-id/pocket-id

pocket-id/values.yaml

@@ -58,14 +58,14 @@ dbInit:
   # References keys on existingSecret
   adminPasswordSecretKey: POSTGRES_ADMIN_PASSWORD
   userPasswordSecretKey: POCKET_ID_DB_PASSWORD
-  image: postgres:16-alpine
+  image: postgres:18-alpine
 
 backup:
   db:
     enabled: false
     schedule: "0 4 * * *"
     retentionDays: 7
-    image: postgres:16-alpine
+    image: postgres:18-alpine
     host: postgres-tcp.postgres.svc.cluster.local
     user: pocket_id
     database: pocket_id