Fix Authentik PostgreSQL backup credentials

apps/backup/postgresql/authentik/kustomization.yaml

@@ -19,6 +19,9 @@ patches:
                   - name: pg-dump
                     env:
                       - {name: BACKUP_TARGET, value: authentik}
+                      - {name: BACKUP_MODE, value: database}
                       - {name: PGHOST, value: authentik-postgresql}
+                      - {name: PGUSER, value: authentik}
+                      - {name: PGDATABASE, value: authentik}
                       - name: PGPASSWORD
-                        valueFrom: {secretKeyRef: {name: authentik-postgresql, key: postgres-password}}
+                        valueFrom: {secretKeyRef: {name: authentik-postgresql, key: password}}