[prometheus-pgbouncer-exporter] Update Helm release postgresql to ~16.6.0 (#5524)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: helm-charts-renovate-helper[bot] <203471071+helm-charts-renovate-helper[bot]@users.noreply.github.com>

Author: renovate[bot]

Diff for: charts/prometheus-pgbouncer-exporter/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "v0.10.2"
 description: A Helm chart for prometheus pgbouncer-exporter
 name: prometheus-pgbouncer-exporter
-version: 0.6.0
+version: 0.7.0
 home: https://github.com/prometheus-community/pgbouncer_exporter
 sources:
   - https://github.com/prometheus-community/pgbouncer_exporter
@@ -20,6 +20,6 @@ maintainers:
 type: application
 dependencies:
   - name: postgresql
-    version: "~16.5.0"
+    version: "~16.6.0"
     repository: https://charts.bitnami.com/bitnami
     condition: postgresql.enabled