chore(deps): update helm chart postgresql to v6 (#1343)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

charts/stable/miniflux/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: "2.0.33"
 description: Miniflux is a minimalist and opinionated feed reader.
 name: miniflux
-version: 3.0.10
+version: 4.0.0
 kubeVersion: ">=1.16.0-0"
 keywords:
 - miniflux
@@ -19,7 +19,7 @@ dependencies:
 - condition: postgresql.enabled
   name: postgresql
   repository: https://truecharts.org/
-  version: 5.2.2
+  version: 6.0.1
 maintainers:
 - email: info@truecharts.org
   name: TrueCharts